IBM ThinkPad T40 series Hardware Maintenance Manual

Retaining the UUID
The Universally Unique Identifier (UUID) is a 128-bit
number uniquely assigned to your computer at production
and stored in the EEPROM of your system board. The
algorithm that generates the number is designed to provide
unique IDs until the year A.D. 3400. No two computers in
the world have the same number.
When you replace the system board, you must set the
UUID on the new system board as follows:
1. Install the ThinkPad Hardware Maintenance Diskette
Version 1.69, and restart the computer.
2. From the main menu, select 4. Assign UUID.
A new UUID is created and written. If a valid UUID
already exists, it is not overwritten.
FRU replacement notices
66 MT 2373/2374/2375/2376/2378/2379

IBM ThinkPad T40 series Specifications

General

Processor	Intel Pentium M (1.3 GHz - 1.7 GHz)
Chipset	Intel 855PM
Hard Drive Interface	ATA-100
Modem	56K V.92
Release Year	2003
RAM	256 MB - 2 GB (DDR SDRAM)
Storage	30 GB - 80 GB (HDD)
Display	14.1"
Graphics	ATI Mobility Radeon 7500 or 9000
Optical Drive	DVD-ROM/CD-RW Combo
Operating System	Windows XP Professional
Weight	2.2 kg (4.9 lbs)
Battery	Li-Ion
Wireless	Intel PRO/Wireless 2100
Ethernet	10/100 Mbps
Ports	2 x USB 2.0, VGA, RJ-11, RJ-45, Audio In/Out
Dimensions	311 mm x 255 mm x 26.6 mm (12.24" x 10.04" x 1.05")