Seagate ST3500312CS SATA 3.5 PCB (9GW132-191, SC13, 5699 AC)

This listing is for the hard drive circuit board (PCB / logic board) only — no hard drive is included. The PCB fits Seagate models such as ST3500312CS and carries markings 9GW132-191, SC13, 5699 AC. Because we stock a large number of boards, the exact PCB you receive may differ slightly from the photo. Intended use: data recovery and hard drive repair. Before ordering, confirm that a replacement PCB is the correct fix by following our hard drive diagnostics guide and verify compatibility using the Donor Matching Guide. Important: most Seagate PCBs store unique drive-specific information in a ROM (memory) chip. That ROM data must be transferred to the replacement board for the drive to function properly. If the ROM chip can be moved, a local computer technician can usually perform the transplant. For customers whose order total is $60 or more, we provide a complimentary adaptation service that will either transplant 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, review our PCB Replacement Guide first. If a simple PCB swap does not resolve the issue, we also offer a full PCB Replacement Service—see the Adaptation Service page for more information.