Asus AP2000 Hardware Reference - Page 16

II. System Components Rear Cooling Fan Control Board The rear fans are controlled and monitored by a control board. The fan control 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. II. Components Fan control board with cable connections Rear Cooling Fan Control Board Layout The rear fan control board, although small, has many functions as shown. Fan power connector (Reserved Connector) Power input connector Fan status signal connector Fan control settings 16 AP2000 Hardware Reference Guide