WD1000DHTZ-04N21V0 (771831-701 AB) WD SATA 2.5 PCB

This sale is for the hard drive circuit board (PCB / logic board) ONLY — no hard drive included. Because we stock large quantities, the actual PCB you receive may differ slightly from the photo. Intended use: data recovery and hard drive repairs. Before purchasing, verify compatibility using our Donor Matching Guide and follow our Hard Drive Diagnostics Guide to confirm a replacement PCB will resolve your issue. Important: most drive PCBs contain unique data stored in a ROM (memory) chip that is required for correct operation. The ROM contents must be transferred to the replacement board — either by moving the physical ROM chip or by reprogramming the new PCB with the correct ROM data. If you’re not performing the transfer yourself, a local computer technician can usually handle the chip transplant. For customers spending $60 or more we include a complimentary adaptation service that covers either relocating the ROM chip onto the new PCB or programming the replacement board with the correct ROM information. If you plan to replace the board yourself, review our PCB Replacement Guide. Should a simple PCB swap not fix the problem, we provide a dedicated PCB Replacement Service — see the Adaptation Service page for full details.