Asus AP2500 Hardware Reference Manual - Page 16

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II. System Components

Rear Cooling Fan Control Board

The rear fans are controlled and monitored by a control board. The fan con-

trol board requires power input from the power supply which allows the

individual fans to obtain their power when connected to the control board.

The control board also sends fan status information to the LEDs located on

the front of the server and to the ASMA software. The fan control board's

cable connections are shown below.

Rear Cooling Fan Control Board Layout

The rear fan control board, although small, has many functions as shown.

(Reserved Connector)

Fan status signal connector

Fan control board with cable connections

AP2500 Hardware Reference Guide

Fan power connector

Power input connector

Fan control settings