Seagate ST3320418AS SATA 3.5 PCB — 9SL14C-021 / HP34 / 5701 N (Logic Board)

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 actual board you receive may differ slightly from the photo. Intended use: data recovery and hard drive repair for models matching ST3320418AS, 9SL14C-021, HP34, 5701 N. Before purchasing, confirm compatibility by following our Donor Matching Guide and run the steps in our hard drive diagnostics guide to determine whether a PCB swap will resolve your issue. Many Seagate boards store unique configuration data in a ROM (memory) chip; that ROM or its contents must be transferred to the replacement board for proper operation. If moving the chip is feasible, a local computer technician can usually perform the transplant; alternatively, we provide complimentary adaptation service for orders of $60 or more, which covers either transplanting the ROM chip onto the new PCB or reprogramming the replacement with the correct ROM data. If a simple board swap does not fix the drive, we also offer a dedicated PCB Replacement Service — see our Adaptation Service page for full details. For customers who plan to do the work themselves, consult our PCB Replacement Guide for step-by-step instructions.