PCB Controller 2060-771672-004 for WD2500BEVT-75A23T0 WD2500BEVT-24A23T0.
It's important to know when a PCB is bad and when swapping it with a donor PCB could work. A thorough diagnosis is required. Embedded in a Firmware on the PCB is "adaptive data" that is unique to the hard drive it's attached to.