System Id Button: Cn31; Serial Port Connector: Com 2 - MSI E7520 Master2-S2M User Manual

MS-9136 SSI Server Board

System ID Button: CN31

The CN31 system ID button is designed to facilitate the management of two or
more MS-9136 systems. W hen one of the systems crashes, users may press the
CN31 button on the back panel of all systems (or alternatively press the identical
System ID Button on the front panel) and the system ID LED of the crashed system will
simultaneously light up, helping users to easily identify the broken system and get it
fixed. By pressing the CN31 button again, the system ID LED will go out.

Serial Port Connector: COM 2

The mainboard provides one 9-pin header as serial port COM 2. The port is a
16550A high speed communication port that sends/receives 16 bytes FIFOs. You can
attach a serial mouse or other serial devices directly to it.
1
9
COM 2
2-16
CN31
Back Panel
2
PIN
1
2
8
3
4
5
6
7
8
9
Pin Definition
SIGNAL DESCRIPTION
DCD Data Carry Detect
DSR Data Set Ready
SIN Serial In or Receive Data
RTS Request T o Send
SOUT Serial Out or Transmit Data
CTS Clear To Send
DTR Data Terminal Ready
RI Ring Indicate
GND Ground