The power subsystem may be configured either with two 430 Watt (W) power supply modules in a non-redundant configuration, or three 430 W power supply modules for a DC redundant power (2 + 1) configuration. Separate dual AC power cords provide AC line redundancy. Each AC input has two fuses rated at 250V/15A, one for line and one neutral. The AC inputs are not required to be on the same AC power phase (which means they can be on two separate electrical circuits for added redundancy). For troubleshooting purposes only, a single power supply can be used to power the server. How do I replace a power supply unit in the 995 server?

When the green LED on each of the 995-series server power supply modules is lit, it indicates that AC power is applied and the power module is functioning properly. Three green LEDs are on the power supply cage. Two +5VSB power green LEDs, labeled SB1 and SB2, are lit when +5VSB power is present. The third green LED, labeled AC_R, is lit when the center power module is installed and the AC transfer switch is functioning properly. A Power LED is also located on the front panel. It is labeled PWR and is green when power is applied to the server.