Jumper Settings; Rs232 Pinout - StarTech.com PEX2S553S Instruction Manual

Jumper Settings

Power over serial Enable/Disable (per-port):
Each port has 2 sets of jumper pins (labeled above) that can be configured to provide
power over Pin 1 and/or Pin 9, or neither.
DCD (Data Carrier Detect): No power
sent over Pin 1
5V: DC5V, from LP4 (LP4 power
connection required)
12V: DC12V, from LP4 (LP4 power
connection required)

RS232 Pinout

NOTE: Pin 1 and/or 9 of the DB9 connector will output DC power if the corresponding
jumper was enabled.
Instruction Manual
Pin 1
DCD
5V 12V
Pin 9
RI 5V
RI (Ring Indicator): No power sent over
Pin 9
5V: DC5V, from LP4 (LP4 power
connection required)
12V: DC12V, from LP4 (LP4 power
connection required)
2
12V
Pin 1
DCD
Pin 2
RXD
Pin 3
TXD
Pin 4
DTR
Pin 5
GND
Pin 6
DSR
Pin 7
RTS
Pin 8
CTS
Pin 9
RI