The Picture will show you where the EEPROM is located at, but here goes some of the Manufacturer’s Specs and Manual for this model. If you have the BIN file for this model or addition pictures? Please let me know and I will post it here.

x40  MotherBoard with the EEPROM, Click on the Picture for a full view

Manufacturer's Manual Click Here!

Features and specifications
Processor Ultra Low Voltage Intel Mobile Pentium M at 1.0 GHz or 1.2GHz
Ultra Low Voltage Intel Mobile Pentium M 713 or 738
Memory 256MB or 512MB and supports up to 1.5GB maximum memory
Hard drive 30GB or 40GB sizes
Display 12.1" TFT display
Graphics Intel Extreme Graphics II
CD and DVD drive Available only in docking station, USB, or Ultrabase slot
Networking Integrated 802.11b, 802.11bg, or 802.11abg wireless (select models)
Security Security chip
Battery Lithium Ion in 4 cell and 8 cell configurations
Operating System Microsoft Windows XP or Microsoft Windows 2000
ThinkVantage Technologies ThinkVantage Technologies help make your system more secure, manage networks and connectivity, backup and restore your data, and more. Learn more and download.
Detailed specifications All specifications for the ThinkPad X40 system

Accessories
 Memory 
 Hard drive
 CD and DVD drive

Service parts
 System
 Display
 Keyboard
 Recovery CD