Location EEPROM Password IBM v1.0

390 390E 390X you treat it as a 24RF08
600 EEPROM you treat it as a 24C01
600e EEPROM you treat it as a 24RF08
600x EEPROM you treat it as a 24RF08
A2* Series you treat it as a 24RF08 Includes A20m A20p A21m A21p A22m A22p
A30 A30p A31 A31p you treat it as a 24RF08
G40 EEPROM you treat it as 24RF08
Treat L412 EEPROM as a 24RF08
Treat L512 EEPROM as a 24RF08
Treat L520 EEPROM as a 24RF08
R30 EEPROM you treat it as 24RF08
R31 EEPROM you treat it as 24RF08
R61 R61i EEPROM you treat it as a 24RF08
R32 EEPROM you treat it as 24RF08
R40 EEPROM you treat it as a 24RF08

R400 EEPROM you treat it as a 24RF08
R50 and R51 EEPROM you treat it as 24RF08
R51e EEPROM you treat it as 24RF08
R52 EEPROM you treat it as LSI
R60 Z60SB Atmel 8356908

The following ThinkPad models DO NOT store Supervisor Password [SVP] in EEPROM, models SL300 SL400 SL500 G550 T*40 T440 T450 T540 X*40 W540 W541 X240 X250 X1 Carbon (Gen 2) and (Gen3) Helix Gen3. Therefore it is of no use searching for an EEPROM in those models.