What can we do when we don't trust UUID?

george1421 · Oct 31, 2019, 1:31 AM

Using the uuid as a unique system ID has been proven to not be a reliable method of system identification. I saw this when working with dnsmasq trying to deliver a certain iPXE boot file based on the system requesting boot info. I ended up giving up on the task since the UUID field is defined in IEEE documentation, but the implementation of that 32 character field it up to the hardware manufacture to populate. There is no guidance from IEEE on the content of this field or even a requirement for the system manufacturer to populate this field.

In my testing I found that most enterprise system builders do this this field to uniquely identify their hardware, but not all do. So what can we do to create a uniquely identifiable ID for fog to use. Initially we were using the network adapter’s hardware mac address for system identification. This process worked great until computers began shipping without built in ethernet adapters. USB dongles where then required to image these machines with FOG. The issue here is that now we have many machines that used the same USB dongle (or dock) for imaging and they all have the same mac address inside fog.

So again I ask, what can we do?

One solution comes from the way I had to program and manage unique record keys in Lotus Notes back in the early 2000s. At that time we used several fields to create a unique composite key that specifically described that record for searching.

I feel we can use the same concept with FOG to create a new key that precisely describes a system registered in FOG. It may be required to create a new database field to contain this key for this discussion lets call the key fluid (Fog Logical Unit ID) [yes there is a double meaning here too].

What I propose would be to use the following fields that FOG is already collecting when the system is registered. The fluid key might be comprised of the following fields: <mac_address>|<System Serial Number>|(alternate would be <Motherboard Serial Number> if <System Serial Number> was blank or contained non lower ascii characters)<Motherboard Asset Tag><Chassis Asset>|<System Product> Or any other smbios key that is unique to the specific hardware.

I did intentionally include the Motherboard asset tag and the chassis asset tag to allow the IT admin to have the ability to add uniqueness to the fluid if all other fields became equal.

I did collect samples of a few systems I have at home to see if we could find uniqueness in what FOG is collecting.

Dell e6410

System Manufacturer	Dell Inc.
System Product	Latitude E6410
System Version	0001
System Serial Number	5XXXxX1
System Type	Type: Laptop
BIOS Vendor	Dell Inc.
BIOS Version	A16
BIOS Date	12/05/2013
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	04373Y
Motherboard Version	A03
Motherboard Serial Number	/5XXXxX1/CN1XXXXXR03D5/
Motherboard Asset Tag	
CPU Manufacturer	Intel
CPU Version	Intel(R) Core(TM) i7 CPU M 640 @ 2.80GH
CPU Normal Speed	Current Speed: 2799 MHz
CPU Max Speed	Max Speed: 4000 MHz
Memory	3.65 GiB
Hard Disk Model	WDC WD2500BEKT-75PVMT0
Hard Disk Firmware	01.01A01
Hard Disk Serial Number	WD-WXK1AXXXXX4
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	5XXXxX1
Chassis Asset

Dell e6440

System Manufacturer	Dell Inc.
System Product	Latitude E6440
System Version	00
System Serial Number	7XXXxX1
System Type	Type: Laptop
BIOS Vendor	Dell Inc.
BIOS Version	A14
BIOS Date	12/01/2015
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	
Motherboard Version	
Motherboard Serial Number	/7XXXxX1/ /
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel
CPU Version	Intel(R) Core(TM) i5-4300M CPU @ 2.60GHz
CPU Normal Speed	Current Speed: 2600 MHz
CPU Max Speed	Max Speed: 2600 MHz
Memory	3.75 GiB
Hard Disk Model	Crucial_CT275MX300SSD1
Hard Disk Firmware	M0CR040
Hard Disk Serial Number	172XXXXX535
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	7XXXxX1
Chassis Asset

VMWare virtual machine

System Manufacturer	VMware, Inc.
System Product	VMware Virtual Platform
System Version	None
System Serial Number	VMware-42 2e a9 xx 9b xx 2c 15-xx af xx d9 xx xx xx a9
System Type	Type: Other
BIOS Vendor	Phoenix Technologies LTD
BIOS Version	6.00
BIOS Date	04/14/2014
Motherboard Manufacturer	Intel Corporation
Motherboard Product Name	440BX Desktop Reference Platform
Motherboard Version	None
Motherboard Serial Number	None
Motherboard Asset Tag	Not Specified
CPU Manufacturer	GenuineIntel 000000000000 000
CPU Version	Intel(R) Xeon(R) CPU E5620 @ 2.40GHz
CPU Normal Speed	Current Speed: 2400 MHz
CPU Max Speed	Max Speed: 30000 MHz
Memory	3.85 GiB
Hard Disk Model	
Hard Disk Firmware	
Hard Disk Serial Number	
Chassis Manufacturer	No Enclosure
Chassis Version	
Chassis Serial	None
Chassis Asset	No Asset Tag

Intel NUC

System Manufacturer	.................................
System Product	.................................
System Version	.................................
System Serial Number	.................................
System Type	Type: Desktop
BIOS Vendor	Intel Corp.
BIOS Version	FYBYT10H.86A.0047.2014.1224.1147
BIOS Date	12/24/2014
Motherboard Manufacturer	Intel Corporation
Motherboard Product Name	DN2820FYK
Motherboard Version	H24582-204
Motherboard Serial Number	GEFYXXXXXXY
Motherboard Asset Tag	.................................
CPU Manufacturer	Intel
CPU Version	Intel(R) Celeron(R) CPU N2830 @ 2.16GHz
CPU Normal Speed	Current Speed: 2160 MHz
CPU Max Speed	Max Speed: 2400 MHz
Memory	3.68 GiB
Hard Disk Model	SanDisk SDSSDP128G
Hard Disk Firmware	3.2.0
Hard Disk Serial Number	1510XXXXXXX89
Chassis Manufacturer	.................................
Chassis Version	
Chassis Serial	.................................
Chassis Asset

Lenovo X60

Lenovo
System Manufacturer	LENOVO
System Product	17023LU
System Version	ThinkPad X60s
System Serial Number	LVXXXX6
System Type	Type: Notebook
BIOS Vendor	LENOVO
BIOS Version	7BETD5WW (2.16 )
BIOS Date	03/31/2008
Motherboard Manufacturer	LENOVO
Motherboard Product Name	17023LU
Motherboard Version	Not Available
Motherboard Serial Number	1ZDXXXXX0S
Motherboard Asset Tag	
CPU Manufacturer	GenuineIntel
CPU Version	Intel(R) Core(TM) Duo CPU
CPU Normal Speed	Current Speed: 1667 MHz
CPU Max Speed	Max Speed: 1667 MHz
Memory	1.46 GiB
Hard Disk Model	FUJITSU MHY2080BH
Hard Disk Firmware	0084000D
Hard Disk Serial Number	K43XXXXXX62PA
Chassis Manufacturer	LENOVO
Chassis Version	
Chassis Serial	Not Available
Chassis Asset

Virtualbox

System Manufacturer	innotek GmbH
System Product	VirtualBox
System Version	1.2
System Serial Number	0
System UUID	ac7a7b42-e5d2-4bac-bcda-ef5ae35d4cf0
System Type	Type: Other
BIOS Vendor	innotek GmbH
BIOS Version	VirtualBox
BIOS Date	12/01/2006
Motherboard Manufacturer	Oracle Corporation
Motherboard Product Name	VirtualBox
Motherboard Version	1.2
Motherboard Serial Number	0
Motherboard Asset Tag	Not Specified
CPU Manufacturer	
CPU Version	
CPU Normal Speed	
CPU Max Speed	
Memory	724.69 MiB
Hard Disk Model	VBOX HARDDISK
Hard Disk Firmware	1.0
Hard Disk Serial Number	VBa44dd0ba-42d13f3b
Chassis Manufacturer	Oracle Corporation
Chassis Version	
Chassis Serial	Not Specified
Chassis Asset	Not Specified

Sebastian Roth · Oct 23, 2017, 3:57 PM

@george1421 Thanks for opening this thread. I’ve been onto that and opened an issue on github to work on that already but it’s still a great idea to discuss this important issue here in the forums as not all of you are on github I suspect.

Good to start with collecting system information as you did. So we see what’s available before we actually get into deciding about what to use.

As described in the github issue I still think we should not add another field to the DB for that. For that all FOG users would have to go through some kind of process to fill this new field with proper information for each and every client they have. Though we could do all this with the fog-client and other means of updating the DB field when clients run tasks I don’t think we need to go there.

What I propose is adding a logic to the PHP code that kind of concatenates (though not in the sense of string concat…) all the information we already have in the DB to find that one unique host currently talking…

george1421 · Oct 23, 2017, 4:22 PM

@sebastian-roth said in What can we do when we don't trust UUID?:

As described in the github issue I still think we should not add another field to the DB for that.

I’m not suggesting one way or the other here, but just opening the discussion.

Adding a new field would be possible especially if the fluid value can be calculated based on values already in the inventory database. This could be a simple (or complex) sql script delivered with a FOG update just like we do today. If the value can be calculated then it can be populated.

You do raise an interesting point, what are the impacts to the FOG Client if we move away from mac address being the key identifier? The mac address will need to be involved somewhere still with booting since iPXE isn’t as smart as the FOG programmer’s PHP skills.

Sebastian Roth · Oct 23, 2017, 4:30 PM

Looking through the specs you posted I get the impression that we should be able to reliably identify unique systems checking those five:

MAC address
System UUID
System Serial Number
Motherboard Serial Number
Hard Disk Serial Number

Though this is where the problems start. We need iPXE to report those figures right on boot-up so we can identify each and every client properly. So we cannot wait for linux to come up and read DMI information I am afraid. We might need to add some code to iPXE to be able to make this work.

Check out this list: http://ipxe.org/cfg (serial, asset, … sounds good - and we should be able to add more in case we need)

george1421 · Oct 23, 2017, 5:03 PM

@sebastian-roth I wonder if we should see if the testers can provide more examples of what I posted. We only have Dells at my work so what I found almost all dells are exactly the same in what they produce. It may be of some value to get the inventory of the MSI board that started this quest too. The more data we have to start with, the better the decision will be even before any code is crafted.

As for the ipxe that is going to be a difficult one.

These four look interesting:

manufacturer 	(string) 	Manufacturer
product 	(string) 	Product name
serial 	(string) 	Serial number
asset 	(string) 	Asset tag

You can’t/shouldn’t use the hard drive serial number since that is the one device that may change more frequently than the other values. Hard drive crashes, is replaced and now we have a new identity.

Joe Schmitt · Oct 23, 2017, 5:09 PM

@george1421 @Sebastian-Roth this is a very good conversation to be having. FOG 2.0 was looking at system uuids to identify computers, but for the reasons you stated, that wouldn’t work very well. Thinking out-loud here, maybe these points are worth considering:

There is no 1 single we can rely on as you showed in your original post, and some derived value based on client information may be the best route to go.
A static key derived from values may not be the best idea. Instead it should be a weighted component comprised of several fields. For example, one could think about it like so:
- UUID: .4
- Primary MAC: .2
- Motherboard asset #: .2
- Hard drive asset #: .1
- Ram/CPU information :.1

For each field that matches, a score gets increment by that amount; the host with the highest score, and above some threshold, gets selected/matched (essentially a fuzzy search). This provides some tolerance against machine’s hardware being upgraded, or portable network adapters being used. Obviously the fields I picked were completely arbitrary and some testing may need to go into it to pick the best identifiers.

Wayne Workman · Oct 23, 2017, 5:27 PM

Trying to keep this short but - I don’t think HDD serial numbers should be used because disks fail and get replaced. Also, a technician may trade HDDs in two boxes to see if a problem stays with the original box or moves to the new box.

I don’t think RAM information is a good one either, since RAM can be added. CPU would be better but still not great.

If the motherboard is changed out, that is effectively a new host - because it’ll come with a new MAC and new motherboard serial number.

Tom Elliott · Oct 23, 2017, 5:29 PM

This is just a discussion. Nothing here is set in stone, the idea is to come up with a better solution than relying on a single point.

Joe Schmitt · Oct 23, 2017, 5:31 PM

@Wayne-Workman as I said,

Obviously the fields I picked were completely arbitrary and some testing may need to go into it to pick the best identifiers.

and as Tom said, this is just brainstorming how to best identify hosts; nothing is set in stone.

Also, for the reasons you stated, hdd and ram have a lower weight in the fuzzy search; but they are still important metrics.

As for the motherboard being changed out, that’s essentially saying you have a brand new computer, not much we can do about that. But even then, the fuzzy search would be able to suggest a couple hosts that are more likely than the rest. That would allow FOG to cooperate with fog admins; if a host has been changed greatly, FOG can prompt the user to select which host it is, and update its metrics. The point of a fuzzy search is to handle most changes in a host gracefully. There will always be extremes.

george1421 · Oct 23, 2017, 6:24 PM

@joe-schmitt The issue is with fuzzy searches, iPXE must somehow identify the system or will it just pass the mac address to a FOG backend process and that backend process will reach out and identify the hardware. In at way the mac address will be a tickler to trigger fog to reach out and identify the hardware?

I do think you are on the right approach for a weighted average though.

I might suggest that we do try to use the fields iPXE can read and combine them into a passable string to the fog back end processes. iPXE has some crude string concatenation functions that we might use. I realize for FOG 2 we might not use iPXE (guess), so the process may be different.

manufacturer 	(string) 	Manufacturer
product 	(string) 	Product name
serial 	(string) 	Serial number
asset 	(string) 	Asset tag

FallingWax · Oct 23, 2017, 7:34 PM

@george1421
Posiflex 3815

System Manufacturer	POSIFLEX
System Product	XT3815
System Version	B1F2212311
System Serial Number	XTHXXX26
System UUID	12345678-1234-5678-90ab-cddeefaabbcc
System Type	Type: Notebook
BIOS Vendor	INSYDE Corp.
BIOS Version	REV.H
BIOS Date	02/10/2017
Motherboard Manufacturer	POSIFLEX
Motherboard Product Name	XT3815
Motherboard Version	B1
Motherboard Serial Number	Type2 - Board Serial Number
Motherboard Asset Tag	Type2 - Board Asset Tag
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Celeron(R) CPU J1900 @ 1.99GHz
CPU Normal Speed	Current Speed: 2009 MHz
CPU Max Speed	Max Speed: 2416 MHz
Memory	3.75 GiB
Hard Disk Model	Phison SSBP064GTMC0-S11
Hard Disk Firmware	SBFM00.8
Hard Disk Serial Number	171XXXXXX126
Chassis Manufacturer	Chassis Manufacturer
Chassis Version	
Chassis Serial	Chassis Serial Number
Chassis Asset

Wayne Workman · Oct 23, 2017, 10:51 PM

@Joe-Schmitt understood. Just participating here.

@george1421 said in What can we do when we don't trust UUID?:

I might suggest that we do try to use the fields iPXE can read

That’s a great start. I don’t know what things iPXE can currently read, but we need to figure out all of those.

Of course, if the iPXE provided information is not enough to get a single result in a fuzzy search, then FOS can be loaded fully and it’s first task would be to retrieve the other system information that would allow the FOG Server to correctly identify the host in a fuzzy search.

Sebastian Roth · Oct 24, 2017, 3:24 AM

@wayne-workman:

I don’t know what things iPXE can currently read, but we need to figure out all of those.

See here: http://ipxe.org/cfg

Of course, if the iPXE provided information is not enough to get a single result in a fuzzy search, then FOS can be loaded fully and it’s first task would be to retrieve the other system information that would allow the FOG Server to correctly identify the host in a fuzzy search.

Don’t think it’s wise to spin up FOS for that. We’d simply add the stuff needed to iPXE. It’s coded in C and has full access to all the information FOS would have as well. No need to do this extra round trip!

@Joe-Schmitt said:

For each field that matches, a score gets increment by that amount; the host with the highest score, and above some threshold, gets selected/matched (essentially a fuzzy search).

Sounds like a nice idea. Though I definitely wouldn’t put UUID up that high. Essentially all information is kind of problematic and that’s what’s driving us to find a new solution.

UUID is fffffff-… or 0000000-… in some cases - totally useless.
MACs are shared amongst hosts via USB NICs, hard drives serials can change as of dying hardware or intended change
RAM/CPU or any other static hardware information is nowhere unique in huge environments where lots of identical machines are bought in a batch
Motherboard serial and motherboard asset tag should be the best bet but in reality are not unique - sometimes not even set at all! (see @FallingWax’s post Type2 - Board Serial Number)

That said I still like the idea of the fuzzy search but wouldn’t make much if a science out of it. Essentially we have many hosts out there not having proper inventory data in the DB anyway.

I will start by adding the needed information to the iPXE params and we’ll take it from there.

Edit: Ok, I just brought up the iPXE shell on an iMac that I have here for debugging and saw that iPXE already has this smbios information: uuid, asset (not set on the iMac by the way), board-serial (lookes good on the iMac), manufacturer (don’t think we wanna use that), product (no), serial (probably being the system serial and looking pretty good on the iMac - different to the board-serial as well!)

Matthieu Jacquart · Oct 24, 2017, 6:47 AM

System Product	OptiPlex 3020
System Version	00
System UUID	4c4c4544-004e-3510-8058-cac04f443532
System Type	Type: Space-saving
BIOS Vendor	Dell Inc.
BIOS Version	A14
BIOS Date	11/01/2016
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	0WMJ54
Motherboard Version	A01
Motherboard Serial Number	CN7016351L0B2B
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel
CPU Version	Intel(R) Core(TM) i3-4150 CPU @ 3.50GHz
CPU Normal Speed	Current Speed: 3500 MHz
CPU Max Speed	Max Speed: 3800 MHz
Memory	3.77 GiB
Hard Disk Model	SAMSUNG SSD PM851 2.5 7mm 128GB
Hard Disk Firmware	EXT08D0Q
Hard Disk Serial Number	S1CTNSAFC25193
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	Dell Inc.
System Product	OptiPlex 3040
System Version	Not Specified
System Serial Number
System UUID	4c4c4544-0039-5210-8046-c3c04f584432
System Type	Type: Desktop
BIOS Vendor	Dell Inc.
BIOS Version	1.5.3
BIOS Date	04/18/2017
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	05XGC8
Motherboard Version	A01
Motherboard Serial Number	CN7220067Q00X2
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-6100 CPU @ 3.70GHz
CPU Normal Speed	Current Speed: 3700 MHz
CPU Max Speed	Max Speed: 4200 MHz
Memory	3.75 GiB
Hard Disk Model	SanDisk Z400s 2.5 7MM 128GB
Hard Disk Firmware	Z2329012
Hard Disk Serial Number	162905404356
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	Dell Inc.
System Product	Vostro 15-3568
System Version	Not Specified
System Serial Number	
System UUID	4c4c4544-0033-4310-8032-b3c04f344632
System Type	Type: Laptop Type: Docking Station
BIOS Vendor	Dell Inc.
BIOS Version	01.09.00
BIOS Date	04/07/2017
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	0PF3V3
Motherboard Version	A00
Motherboard Serial Number	CNWSC0073P002Z
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-7100U CPU @ 2.40GHz
CPU Normal Speed	Current Speed: 2400 MHz
CPU Max Speed	Max Speed: 2400 MHz
Memory	3.63 GiB
Hard Disk Model	LITEON CV3-CE128-11 SATA 128GB
Hard Disk Firmware	TC7110D
Hard Disk Serial Number	TW09K30XLOH0072D00NI
Chassis Manufacturer	Dell Inc. Dell Inc.
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	Dell Inc.
System Product	Vostro 3558
System Version	01
System Serial Number	
System UUID	
System Type	Type: Laptop
BIOS Vendor	Dell Inc.
BIOS Version	A01
BIOS Date	02/09/2015
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	0D13PT
Motherboard Version	A00
Motherboard Serial Number	CN1296356I00CC
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz
CPU Normal Speed	Current Speed: 1700 MHz
CPU Max Speed	Max Speed: 1700 MHz
Memory	3.76 GiB
Hard Disk Model	WDC WD5000LPVX-75V0TT0
Hard Disk Firmware	01.01A01
Hard Disk Serial Number	WXG1A35128LC
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	
Chassis Asset	Not Specified

System Manufacturer	Dell Inc.
System Product	Latitude 3350
System Version	Not Specified
System Serial Number
System UUID	4c4c4544-0057-3310-804d-c3c04f564232
System Type	Type: Laptop
BIOS Vendor	Dell Inc.
BIOS Version	A09
BIOS Date	11/24/2016
Motherboard Manufacturer	Dell Inc.
Motherboard Product Name	0KVTCC
Motherboard Version	A00
Motherboard Serial Number	CN7620665L000W
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-5005U CPU @ 2.00GHz
CPU Normal Speed	Current Speed: 2000 MHz
CPU Max Speed	Max Speed: 2000 MHz
Memory	3.48 GiB
Hard Disk Model	SAMSUNG SSD CM871 2.5 7mm 128GB
Hard Disk Firmware	FXT02D1Q
Hard Disk Serial Number	S26PNXAH333996
Chassis Manufacturer	Dell Inc.
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	LENOVO
System Product	36641Y5
System Version	ThinkCentre M72e
System Serial Number	
System UUID	c21e5f78-c7a0-11e2-ae45-d2b84f742100
System Type	Type: Desktop
BIOS Vendor	LENOVO
BIOS Version	F1KT70AUS
BIOS Date	06/12/2015
Motherboard Manufacturer	LENOVO
Motherboard Product Name	
Motherboard Version	NO DPK
Motherboard Serial Number	
Motherboard Asset Tag	
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i5-3330 CPU @ 3.00GHz
CPU Normal Speed	Current Speed: 3000 MHz
CPU Max Speed	Max Speed: 3800 MHz
Memory	7.60 GiB
Hard Disk Model	SAMSUNG MZ7PC128HAFU-000L5
Hard Disk Firmware	CXM07L1Q
Hard Disk Serial Number	S11VNSAD408679
Chassis Manufacturer	LENOVO
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	LENOVO
System Product	6885DKG
System Version	ThinkPad Edge E531
System Serial Number
System UUID	df5a9f01-53e7-11cb-9630-d2fdad1ea42e
System Type	Type: Notebook
BIOS Vendor	LENOVO
BIOS Version	HEET48WW (1.29 )
BIOS Date	03/13/2015
Motherboard Manufacturer	LENOVO
Motherboard Product Name	6885DKG
Motherboard Version	0B98401 PRO
Motherboard Serial Number	1ZSGS3CY12A
Motherboard Asset Tag	Not Available
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
CPU Normal Speed	Current Speed: 2400 MHz
CPU Max Speed	Max Speed: 2400 MHz
Memory	3.43 GiB
Hard Disk Model	KINGSTON SVP200S360G
Hard Disk Firmware	501ABBF0
Hard Disk Serial Number	50026B7226009BF5
Chassis Manufacturer	LENOVO
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	LENOVO
System Product	80LT
System Version	Lenovo B50-80
System Serial Number	
System UUID	357e7bb2-5b76-11e5-90ab-1c394715e364
System Type	Type: Notebook
BIOS Vendor	LENOVO
BIOS Version	A8CN54WW(V3.07)
BIOS Date	09/02/2016
Motherboard Manufacturer	LENOVO
Motherboard Product Name	Lenovo B50-80
Motherboard Version	SDK0J40700 WIN
Motherboard Serial Number	
Motherboard Asset Tag	NO Asset Tag
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-4005U CPU @ 1.70GHz
CPU Normal Speed	Current Speed: 1700 MHz
CPU Max Speed	Max Speed: 1700 MHz
Memory	3.77 GiB
Hard Disk Model	ST500LT012-1DG142
Hard Disk Firmware	0002LVM1
Hard Disk Serial Number	W3PLYRC4
Chassis Manufacturer	LENOVO
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	Hewlett-Packard
System Product	HP x2 210
System Version	Type1ProductConfigId
System Serial Number	
System UUID	
System Type	Type: Notebook
BIOS Vendor	Insyde
BIOS Version	F.02
BIOS Date	09/11/2015
Motherboard Manufacturer	HP
Motherboard Product Name	8173
Motherboard Version	35.0A
Motherboard Serial Number	PBKGK00WB9I08U
Motherboard Asset Tag	Type2 - Board Asset Tag
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Atom(TM) x5-Z8300 CPU @ 1.44GHz
CPU Normal Speed	Current Speed: 1440 MHz
CPU Max Speed	Max Speed: 1494 MHz
Memory	3.78 GiB
Hard Disk Model	
Hard Disk Firmware	
Hard Disk Serial Number	
Chassis Manufacturer	HP
Chassis Version	
Chassis Serial	Chassis Serial Number
Chassis Asset	Chassis Asset Tag

ystem Manufacturer	Hewlett-Packard
System Product	HP ProBook 4330s
System Version	A0001D02
System Serial Number	
System UUID	73c1971f-f974-11de-8224-4cc45f066085
System Type	Type: Notebook
BIOS Vendor	Hewlett-Packard
BIOS Version	68SRR Ver. F.63
BIOS Date	04/06/2017
Motherboard Manufacturer	Hewlett-Packard
Motherboard Product Name	167E
Motherboard Version	KBC Version 22.26
Motherboard Serial Number	PCMED001Y2UAAU
Motherboard Asset Tag	Not Specified
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz
CPU Normal Speed	Current Speed: 2300 MHz
CPU Max Speed	Max Speed: 2300 MHz
Memory	3.78 GiB
Hard Disk Model	Hitachi HTS723232A7A364
Hard Disk Firmware	EC2OA60W
Hard Disk Serial Number	E38345630AYM6N
Chassis Manufacturer	Hewlett-Packard
Chassis Version	
Chassis Serial	
Chassis Asset

System Manufacturer	TOSHIBA
System Product	Satellite Pro C660
System Version	PSC0RE-01S00EFR
System Serial Number	
System UUID	37ad4484-97b2-e011-9a99-b870f4c7b6c0
System Type	Type: Laptop
BIOS Vendor	TOSHIBA
BIOS Version	2.00
BIOS Date	05/09/12
Motherboard Manufacturer	TOSHIBA
Motherboard Product Name	PWWAA
Motherboard Version	1.00
Motherboard Serial Number	123456789AB
Motherboard Asset Tag	Base Board Asset Tag
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
CPU Normal Speed	Current Speed: 2398 MHz
CPU Max Speed	Max Speed: 4000 MHz
Memory	3.65 GiB
Hard Disk Model	KINGSTON SV300S37A60G
Hard Disk Firmware	580ABBF0
Hard Disk Serial Number	50026B774900C327
Chassis Manufacturer	TOSHIBA
Chassis Version	
Chassis Serial	None
Chassis Asset

System Manufacturer	TOSHIBA
System Product	SATELLITE PRO C850-10N
System Version	PSKC9E-00100SFR
System Serial Number	
System UUID	
System Type	Type: Notebook
BIOS Vendor	Insyde Corp.
BIOS Version	6.80
BIOS Date	10/01/2013
Motherboard Manufacturer	Type2 - Board Vendor Name1
Motherboard Product Name	Type2 - Board Product Name1
Motherboard Version	Type2 - Board Version
Motherboard Serial Number	Type2 - Board Serial Number
Motherboard Asset Tag	Type2 - Board Asset Tag
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz
CPU Normal Speed	Current Speed: 2300 MHz
CPU Max Speed	Max Speed: 4000 MHz
Memory	3.74 GiB
Hard Disk Model	KINGSTON SVP200S360G
Hard Disk Firmware	501ABBF0
Hard Disk Serial Number	50026B722B033A8F
Chassis Manufacturer	OEM Chassis Manufacturer
Chassis Version	
Chassis Serial	OEM Chassis Serial Number
Chassis Asset

System Manufacturer	
System Product	
System Version	
System Serial Number	
System UUID	7a76cd61-5e99-e111-8229-2c27d725b073
System Type	Type: Desktop
BIOS Vendor	Intel Corp.
BIOS Version	BLH6710H.86A.0160.2012.1204.1156
BIOS Date	12/04/2012
Motherboard Manufacturer	Intel Corporation
Motherboard Product Name	DH67CF
Motherboard Version	AAG10215-207
Motherboard Serial Number	BTCF219009Q9
Motherboard Asset Tag	To be filled by O.E.M.
CPU Manufacturer	Intel(R) Corp.
CPU Version	Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz
CPU Normal Speed	Current Speed: 3100 MHz
CPU Max Speed	Max Speed: 3800 MHz
Memory	3.75 GiB
Hard Disk Model	KINGSTON SVP200S360G
Hard Disk Firmware	501ABBF0
Hard Disk Serial Number	50026B72250FA05F
Chassis Manufacturer	
Chassis Version	
Chassis Serial	
Chassis Asset

Sebastian Roth · Oct 24, 2017, 9:26 AM

@Matthieu-Jacquart Awesome, thanks! From your information it seems like asset tag is pretty useless but motherboard serial is looking great I reckon!

george1421 · Oct 24, 2017, 9:54 AM

@matthieu-jacquart Very nice and detailed information. Thank you !!

Jonathan Cool · Oct 24, 2017, 9:58 AM

To help this tread, HP Computer : ProBOOKG2 :

System Manufacturer	HP
System Product	HP ProBook 640 G2
System Version	
System Serial Number	xxxxxxxxxxxxxx
System Type	Type: Notebook
BIOS Vendor	HP
BIOS Version	N76 Ver. 01.07
BIOS Date	04/18/2017
Motherboard Manufacturer	HP
Motherboard Product Name	80FD
Motherboard Version	KBC Version 22.6E
Motherboard Serial Number	xxxxxxxxxxxxxxxxxx
Motherboard Asset Tag	
CPU Manufacturer	Intel(R) Corporation
CPU Version	Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz
CPU Normal Speed	Current Speed: 2700 MHz
CPU Max Speed	Max Speed: 8300 MHz
Memory	7.66 GiB
Hard Disk Model	WDC WD5000LPLX-60ZNTT1
Hard Disk Firmware	02.01A02
Hard Disk Serial Number	WD-xxxxxxxxxxx
Chassis Manufacturer	HP
Chassis Version	
Chassis Serial	xxxxxxxxxxxxxxx
Chassis Asset	```

Sebastian Roth · Oct 24, 2017, 12:30 PM

@jonathan-cool said in What can we do when we don't trust UUID?:

Motherboard Serial Number	xxxxxxxxxxxxxxxxxx

Is this just masked by hand or really xxxxxxxxxxxxxxxxxxx?

Jonathan Cool · Oct 24, 2017, 12:34 PM

@sebastian-roth Masked

Wayne Workman · Oct 24, 2017, 5:09 PM

@sebastian-roth said in What can we do when we don't trust UUID?:

Is this just masked by hand or really xxxxxxxxxxxxxxxxxxx?

If he actually posted the values, someone could use them to make fake warranty calls and get free replacement parts.

What can we do when we don't trust UUID?

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