MK5055GSX, A0/FG501A, HDD2H21 S PK01 S, G002439-0A, Toshiba SATA 2.5 PCB PCB Specification:;Model: MK5055GSX;HDD Code: HDD2H21 S PK01 S;Firmware: A0/FG501A;PCB Revision: G002439-0A;;