Seagate ST3750640NS SATA 3.5 PCB — 9BL148-081 / 3.AYJ / 100409233 F

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 replacement PCBs, the board you receive may differ slightly from the photo. These PCBs are intended for hard drive repair and data recovery work. Before purchasing, review our hard drive diagnostics guide to confirm a PCB swap is likely to resolve your issue, and check compatibility using the Donor Matching Guide. Many Seagate PCBs store unique configuration data in the ROM "memory" chip; that ROM information is required for the drive to operate correctly. The ROM chip (or its data) must be transferred to the replacement board. If the ROM chip can be physically moved, a local electronics or computer technician can usually perform the transplant. For orders of $60.00 or more we include a complimentary adaptation service: we will either transfer the ROM chip to the new PCB or reprogram the replacement board with the correct ROM data. If you plan to do the work yourself, consult our PCB Replacement Guide for step-by-step instructions. If a direct PCB swap does not fix the problem, we also provide a comprehensive PCB Replacement Service to handle more complex cases — see the Adaptation Service page for full details.