Mini PCI Express Card Serial
Users Guide
Document: CTIM-00442
Revision: 0.05
Page 11 of 16
Connect Tech Inc. 800-426-8979 | 519-836-1291
Date: 2018-06-29
PCI-Express 2-Port Isolated Model
These models use two 2mm headers, either latching of non-latching depending on the model (latching model
shown).
Port-1 is connector
P1
on the board, Port-2 is
P2
.
Notes:
[1] DB-9 pin assignments when using cable
CBG191
(CTIC-00539)
Pin
DB9
Pin [1]
RS232 RS422 RS485
1
1
DCD
---
---
2
6
DSR
TX-
TXRX-
3
2
RXD
TX+
TXRX+
4
7
RTS
RX-
---
5
3
TXD
RX+
---
6
8
CTS
---
---
7
4
DTR
---
---
8
9
RI
---
---
9
5
GND
GND
GND
10
---
---
---
---