My hard drive SATA connector pins have snapped and I have to replace the printed circuit board for it (Seagate PCB 100820657) Will replacing the pcb for an identical one still allow the hard drive to work and data remain intact?
You can swap PCB to try. Seagate PCB 100820657 is your donor PCB.
When you get this PCB, you need to move your original PCB’s BIOS to the replacement PCB. The 8pins (4 pins on each sides) with 25P05VP、25P10VP、25F512、25F1024、25F1024AN、SST25VF512、SST25VF010, etc. are the BIOS.

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