IBM ThinkPad A, E, I, R, T, X series 16v 4.5a 70W AC Adapter fit models:

• IBM ThinkPad A Series:
  ThinkPad A20 ThinkPad A20 ThinkPad A20M ThinkPad A20P
  ThinkPad A21 ThinkPad A21E ThinkPad A21M ThinkPad A21P
  ThinkPad A22E ThinkPad A22M ThinkPad A22P ThinkPad A30
  
  ThinkPad A30 series
  ThinkPad A30P ThinkPad A31 ThinkPad A31P
  
  IBM ThinkPad R series:
  ThinkPad R30 ThinkPad R31 ThinkPad R32 ThinkPad R40ThinkPad R40E
  ThinkPad R50 ThinkPad R50E ThinkPad R50P ThinkPad R51
  
  IBM ThinkPad i Series:
  ThinkPad i-1200 ThinkPad i-1210 ThinkPad i-1211 ThinkPad i-1241
  ThinkPad i-1251 ThinkPad i-1271 ThinkPad i-1300
  
  ThinkPad i-1300 series
  ThinkPad i-1321 ThinkPad i-1340 ThinkPad i-1351 ThinkPad i-1351
  ThinkPad i-1391 ThinkPad i-1418 ThinkPad i-1420 ThinkPad i-1421
  ThinkPad i1441 ThinkPad i-1442 ThinkPad i1460 ThinkPad i1480
  ThinkPad i-1482 ThinkPad i-1500 ThinkPad i-1700 ThinkPad i-1720
  ThinkPad i-1721 ThinkPad i-1351 ThinkPad i-1361 ThinkPad i-1391
  
  IBM ThinkPad T Series:
  ThinkPad T20 ThinkPad T21 ThinkPad T22 ThinkPad T23
  ThinkPad T30 ThinkPad T40 ThinkPad T40P ThinkPad T41
  ThinkPad T41P ThinkPad T42 ThinkPad T42P
  
  IBM ThinkPad X Series:
  ThinkPad X20 ThinkPad X21 ThinkPad X22 ThinkPad X23
  ThinkPad X24 ThinkPad X30 ThinkPad X31 ThinkPad X40
  
  IBM ThinkPad E Series:
  ThinkPad E530
  
• Note: Not all compatiable model# is listed.