Seagate SATA 3.5 PCB - ST31000340NS / 9CA158--84 (HPG8, 100468979 K)

This listing is for the hard drive circuit board (PCB / logic board) ONLY — no hard drive is included. Because we keep a large quantity of PCBs in stock, the specific board you receive may vary slightly from the pictured item. Designed for data recovery and hard drive repair, this PCB can be used as a replacement part for Seagate ST31000340NS models. Before purchasing, confirm that a PCB swap will resolve your issue by consulting our hard drive diagnostics guide and ensure part compatibility using the Donor Matching Guide. Most hard drive PCBs contain unique ROM "memory" data that is required for proper operation; the ROM chip or its data must be moved to or programmed onto the replacement board. If the ROM chip can be physically transferred, a local computer technician should be able to perform that task. For orders of $60 or more, we include a complimentary adaptation service which covers either transplanting the ROM chip onto the new PCB or reprogramming the new board with the correct ROM data. If you plan to do the work yourself, review our PCB Replacement Guide for step-by-step instructions. In situations where replacing the circuit board alone does not fix the drive, we also offer a dedicated PCB Replacement Service — see the Adaptation Service page for full details.