Compaq AlphaServer ES45 1B User Manual

System Overview 1-21
One to three power supplies provide power to components in the system chassis.
The system supports redundant power configurations to ensure continued sys-
tem operation if a power supply fails (The Model 2 has a minimum configura-
tion of two power supplies).
The power supplies select line voltage and frequency are automatically selected
for 200–240 V and 50 Hz or 60 Hz.
Power Supply LEDs
Each power supply has two green LEDs that indicate the state of power to the
system.
 POK (Power OK)
Indicates that the power supply is functioning. The POK
LEDisonwhenthesystemisrunning. Whenthesys-
tem power is on and a POK LED is off, that supply is not
contributing to powering the system.
 +5 V Auxiliary
Indicates that AC power is flowing from the wall outlet.
As long as the power supply cord is plugged into the wall
outlet, the +5V Aux LED is always on, even when the
system power is off.
See Chapter 4 for instructions on installing additional power supplies.

Compaq AlphaServer ES45 1B Specifications

General

Brand	Compaq
Model	AlphaServer ES45 1B
Category	Server
Language	English