Serial Port A
Part number 4000832,4000859,A99386-109
Serial A Header Pinout
Serial Port Multiplexer Logic
The motherboard has a multiplexer to connect the rear RJ45 connector to either Serial Port A or Serial Port B in both the 955 and 975 chassis. This facilitates the routing of Serial Port A to the rear RJ45 connector if Serial Port B is used for Serial Over LAN (SOL) in both servers. This serial port selection can be done through the BIOS Setup option.