Seagate ST31000340NS SATA 3.5 PCB — 9CA158-145 / SU0F / 100468979 L

This listing is for the hard drive circuit board (PCB / logic board) ONLY — no hard drive is included. Because we stock a large number of PCBs, the exact board you receive may differ slightly from the photo. Intended use: data recovery and hard drive repair. Important compatibility notes: many Seagate PCBs store unique drive-specific data in a ROM memory chip. That ROM data is required for the drive to function correctly and must be transferred or programmed onto the replacement board. Before purchasing, review our Donor Matching Guide to confirm compatibility and follow our Hard Drive Diagnostics Guide to determine whether a PCB swap is likely to resolve your issue. If the ROM chip can be physically moved, a local computer technician can usually perform the transplant. For customers who prefer assistance, we provide a complimentary adaptation service on orders of $60 or more — this covers either transplanting the ROM chip onto the new PCB or reprogramming the replacement board with the correct ROM data. If a straightforward PCB swap does not fix the drive, we also offer a dedicated PCB Replacement Service to handle more complex cases. For do-it-yourselfers, consult our PCB Replacement Guide for step-by-step instructions. Visit the Adaptation Service page for full details on our services and options.