Seagate ST1000LM035 SATA 2.5 PCB - 1RK172-285, SDM1, 8691 C

Original Seagate PCB for SATA 2.5 drives compatible with model ST1000LM035. PCB part number: 1RK172-285; firmware/board identifiers: SDM1 and 8691 C. Designed as a direct replacement for a failed circuit board — always verify that the donor board matches these exact identifiers before performing the swap.