The power supply provides various DC voltages required to power the system’s PCBs. The 4-Slot Cabinet requires a single power supply, and the 8-Slot Cabinet requires up to 3 power supplies, depending on system configuration.
In an 8-Slot Cabinet, you must have a power supply for every 2 16DSTU PCBs installed.
You can not mix P/Ns 80005A, 80005B and 80005C in the same system.
If the system uses UltraMail or UltraMail 2000, you must only install the power supply P/N 80005C.