If you corrupt the BIOS:
Keep a copy of the HP PINOUT diagram for the 6-pin power connector. It will save you from accidentally frying the board when testing with a bench power supply. Hp Ms-7860 Ver 1.2 Motherboard Manual
The is a proprietary motherboard used in the HP ProDesk 400 G1 Microtower . Because HP motherboards are custom-made for specific PC models, they do not have standalone retail manuals; however, the following hardware specifications and pinouts are documented in the system's Hardware Reference Guide . Key Specifications If you corrupt the BIOS: Keep a copy