Compatible with | HP-Compaq - EliteBook 8440p Notebook HP-Compaq - ProBook 6550b HP-Compaq - ProBook 6450b HP-Compaq - EliteBook 8440w Mobile Workstation HP-Compaq - ProBook 6545b HP-Compaq - ProBook 6440b HP-Compaq - ProBook 6540b HP-Compaq - ProBook 6445b |