Intel SE7501WV2 User Manual

BMC

Bus

Exchange

SIO

2 to 1

Mux

Level

shifter

Level

Shifter

Header

Rear

RJ45

Serial B

Serial A

 

The rear RJ45 Serial B port is a fully functional serial port that can support any standard serial 
device. Using an RJ45 connector for a serial port allows direct support for serial port 
concentrators, which typically use RJ45 connectors and are widely used in the high-density 
server market. For server applications that use a serial concentrator to access the server 
management features of the baseboard, a standard 8-pin CAT-5 cable from the serial 
concentrator is plugged directly into the rear RJ45 serial port.  

To allow support of either of two serial port configuration standards used by serial port 
concentrators, the J5A2 jumper block located directly behind the rear RJ45 serial port must be 
jumpered appropriately according to the desired standard.  

Note: By default as configured in the factory, the SE7501WV2 baseboard will have the rear 
RJ45 serial port configured to support a DSR signal which is compatible with the Cisco* 
standard.  

For serial concentrators that require a DCD signal, the J5A2 jumper block must be configured 
as follows: The Serial Port jumper placed in position 1 and 2.  Pin 1 on the jumper is denoted by 
an arrow directly next to the jumper block. The following diagram provides the jumper block pin-
out for this configuration.