Perle Systems Speed LE 1P - Manual (Page 33)

Definitions of Signals and Direction
Page 33
DB9 Back Panel Connectors and Pinout
The following diagram shows the SPEED1 LE and SPEED LE Express standard and Low
Profile back panels respectively.
DB9M pin EIA-232
1 DCD
2 RXD
3 TXD
4 DTR
5 S-GND
6 DSR
7 RTS
8 CTS
9 RI
10 C-GND