Thinkpad R50, R50e, R50p, R51, R51e, R52, T40, T40p, T41, T41p, T42, T42p, T43, T43p series use keyboard with the following FRU :
- FRU: 39T0521, 13N9990
*Please take note, all the above mention keyboard FRU are identical and compatible with one another.