Seagate ST3500418AS 9SL142-042 AP24 4128 J SATA 3.5 PCB

This sale is for the hard drive printed circuit board (PCB / logic board) ONLY — no hard drive is included. We maintain a large inventory, so the actual PCB you receive may vary slightly from the pictured unit. Intended for hard drive repair and data recovery tasks. Before purchasing, confirm that a replacement PCB will address your issue by following our hard drive Diagnostics Guide, and verify part compatibility via the Donor Matching Guide. Most Seagate PCBs contain unique ROM data that is required for the drive to function properly; the ROM chip or its data must be transferred to the replacement board. If the ROM chip can be physically moved, a local computer technician can typically perform the transplant. For orders of $60 or more we include free adaptation service, which covers either moving the ROM chip to 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 resolve the problem, we also provide a comprehensive PCB Replacement Service — see the Adaptation Service page for full details.