beautypg.com

StarTech.com PEX4S553S User Manual

Page 6

background image

Instruction Manual

3

Aux power source selection:

RS232 Pinout

NOTE: Pin 9 of the DB9 connector will output DC power if the corresponding jumper

was enabled.

X5V: DC5V, from SP4, an SP4

power connection is required

X12V: DC12V, from SP4, an SP4

power connection is required

I12V (factory default): DC12V, from

PCI Express slot,

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

X5V

X5V

X5V

X12V

X12V

X12V

I12V

I12V

I12V