Technical Product Specification

System Cooling Intel® Server Chassis SC5600

Revision 1.1

Intel order number E39532-004

4.5 Fan Header Connector Descriptions

All system fan headers support pulse width modulated (PWM) fans for cooling the processors in

the chassis. PWM fans have an improved RPM range (20% to 100% rated fan speed) when

compared to voltage controlled fans.

Base and BRP chassis fans are a 4-wire/4-pin style designed to plug into 4-pin or 6-pin SSI Fan

headers. When plugged into a 6-pin header, only the first four signals are used (Pwr, Gnd, Tach,

PWM).

LX chassis fans are a 6-wire/6-pin style designed to plug into 6-pin headers. The extra signals

provide for fan redundancy and failure indications (Pwr, Gnd, Tach, PWM, Presence, and

Failure).

Server Boards installed in this chassis may feature two additional 4-pin CPU fan headers and

one additional 4-pin system fan headers. These connections are not required for use with the

Intel

Server Chassis SC5600.

To assist with fan connections in the system, the system fans are numbered one through five

and color-coded. These correspond to fan header numbers on the server board. Fan 1 and fan

2 connectors are white in color and the fan 3, fan 4, and fan 5 connectors are blue in color.

These colors should also match between server board and fans.