Replacement Maxtor PCB 040123900 is available on HDDZone.com. To swap Maxtor PCB with Main Controller IC Number 040123900, your should make sure the Main Controller IC Number on your original pcb is 040123900 too.
Maxtor PCB 040123900 Image:
Maxtor PCB 040123900
Maxtor PCB 040123900 Additional Images:
Maxtor PCB 040123900
For most of the PCB boards, we also need to swap the BIOS Chip from your original PCB to the replacement PCB, in order to make the PCB compatible with you hard drive.
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Note: Send clear photos of your PCB (both sides) by attachments will make everything easier!