WD5000AAKX-221CA1 (771640-S13 AB) WD SATA 3.5 PCB

This listing is for the hard drive circuit board (PCB / logic board) ONLY — no hard drive is included. Because we maintain a large inventory, the exact PCB you receive may differ slightly from the photo. Intended for use in data recovery and hard drive repair. To verify whether a replacement board will resolve your issue, please follow our hard drive diagnostics guide. Confirm compatibility by consulting the Donor Matching Guide. Most hard drive circuit boards contain unique information stored in the ROM "memory" chip; that data is required for proper drive operation. The ROM chip or its data must be transferred to the replacement PCB. If the chip can be moved, a local computer technician should be able to perform the transplant. For purchases of $60 or more, we include a complimentary adaptation service that covers either moving the ROM chip onto the new PCB or reprogramming the new board with the correct ROM data. If you plan to perform the work yourself, review our PCB Replacement Guide. In cases where a direct board swap does not fix the drive, we offer a special PCB Replacement Service — see the Adaptation Service page for full details.