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.

x31 MotherBoard with the EEPROM, Click on the Picture for a full view

Manufacturer's Manual Click Here!

Features and specifications
Processor Intel Mobile Pentium M at M 1.3Ghz, 1.4GHz, 1.5GHz, 1.6GHz or 1.7GHz
Memory 256MB or 512MB and supports up to 2GB maximum memory
Hard drive 20GB, 30GB, or 40GB sizes
Display 12.1" TFT display
Graphics 16MB RADEON ATI Mobility video chipset
CD and DVD drive Available only in docking station, USB, or Ultrabase slot
Networking Integrated 802.11b, 802.11ab, or 802.11abg wireless (select models)
Security Security chip
Battery Lithium Ion 6 cell configuration
Operating System Microsoft Windows XP or Microsoft Windows 2000
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Detailed specifications All specifications for the ThinkPad X31 system
 
Accessories
 Memory 
 Hard drive, CD drive, floppy disk drive

Service parts
 System
 Display
 Keyboard
 Recovery CD