Seagate ST3500418AS / 9SL142-034 / CC45 / 5701 U — SATA 3.5 PCB (Logic Board)

This listing is for the hard drive circuit board (PCB / logic board) ONLY — no hard drive is included. Because we maintain a large inventory, the exact PCB you receive may differ slightly from the photo. This PCB is intended for hard drive repair and data recovery tasks. Before purchasing, verify that a replacement board will resolve your issue by consulting our Hard Drive Diagnostics Guide and confirm compatibility using the Donor Matching Guide. Most Seagate PCBs contain unique ROM memory data that is required for normal drive operation; that ROM chip or its data must be transferred or programmed onto the replacement board. If a physical chip transplant is possible, a local computer technician can usually perform the operation. For customers spending $60 or more, we include a complimentary adaptation service — either transplanting the ROM chip onto the new PCB or reprogramming the replacement board with the correct ROM data. If you plan to perform the swap yourself, review our PCB Replacement Guide first. If a simple PCB swap does not fix the problem, we also offer a specialized PCB Replacement Service — see the Adaptation Service page for full details.