Seagate ST3500312CS SATA 3.5 PCB — 9GW132-191 / SC13 / 5699 AD

This listing includes the hard drive circuit board (PCB / logic board) ONLY — the hard drive itself is not included. Because we stock a large number of these PCBs, the board you receive may differ slightly from the photo. This PCB is intended for use in hard drive repair or data recovery work. Before purchasing, confirm that swapping the PCB will resolve your problem by using our Hard Drive Diagnostics Guide, and verify compatibility using the Donor Matching Guide. Most of these Seagate circuit boards store unique parameters in a ROM memory chip; that ROM data is required for the drive to function correctly. The ROM chip or its contents must be transferred to the replacement board. If the chip can be physically relocated, a local computer technician can typically perform that task. For orders of $60 or more we provide a complimentary adaptation service that includes either transplanting the ROM chip to the new PCB or reprogramming the replacement board with the correct ROM data. If you prefer to handle the swap yourself, consult our PCB Replacement Guide for step-by-step instructions. In situations where a simple board swap does not restore the drive, we offer a dedicated PCB Replacement Service to address more complex cases — see the Adaptation Service page for full details.