This is the power supply used to provide power to the Basic and Enhanced Operator Station card file and peripherals. The supply provides +/- 5 Vdc, +/- 12 Vdc, and +24 Vdc, as well as AC power to the display, disk drives, and fans.

During station operation, +5 Vdc and +/- 12 Vdc output is monitored by the Diskette Bootstrap card.