UltraPort Serial Adaptors User Guide
Connector box and cable pinouts
Page 124
Chapter 3 Cabling information
DB25 connector box
Note
The UltraPort connector box cable needs to be secured or supported in case
of sudden contact or excessive weight on the cables. Please ensure that
adequate caution is taken to avoid possible damage to the UltraPort card or
Host system. This can be accomplished by securing the cable to a rack or to
the back of the server.
DB25 Pin
EIA-232
EIA-422
EIA-485
1 & Shell
C-GND
C-GND
C-GND
2
TXD
TXD-
TXD-/RXD-
3
RXD
RXD+
RXD+
4
RTS
RTS-
NC
5
CTS
CTS+
NC
6
DSR
RXD-
RXD-
7
S-GND
S-GND
S-GND
8
DCD
CTS-
NC
20
DTR
TXD+
TXD+/RXD+
22
RI
RTS+
NC