WD2500AAKX-75U6AA0, 771640-103 AL — WD SATA 3.5 PCB (Logic Board)

This listing is for the hard drive circuit board (PCB / logic board) ONLY — the drive itself is not included. Because we stock a large number of PCBs, the board you receive may differ slightly from the photo. Intended for use in hard drive repair or data recovery, this replacement PCB should be validated with our hard drive diagnostics guide to confirm it will resolve your issue. Verify part compatibility using the Donor Matching Guide before purchasing. Most hard drive PCBs contain unique information stored in the ROM (memory) chip; that ROM data is required for the drive to operate correctly. The ROM chip or its data must be transferred to the replacement board — if the chip can be moved, a local computer technician can typically perform the transfer. For customers who spend $60 or more, we include a complimentary adaptation service that covers either transplanting the ROM chip onto the new PCB or reprogramming the replacement board with the correct ROM data. If swapping the PCB alone does not fix the problem, we also provide a full PCB Replacement Service—see the Adaptation Service page for details.