Dynabook/Toshiba CPU P000285000 is compatible in the following Models:

Dynabook/Toshiba SATELLITE-PRO Series

Other 4280 - PS428A-0N152

Other 4280 - PS428A-0N155

Other 4280 - PS428A-0N156

Dynabook/Toshiba TECRA Series

Other 8100 - PT810A-11957

Other 8100 - PT810A-11C52