![](/images/new-backgrounds/1170658/17065899x1.webp)
C104H/PCI DB9 Male (Opt4D)
1DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8 CTS
According to cable options and devices connected, several possible connection types are illustrated as below.
Type 1: To connect C104H/PCI Series to a DTE device.
Opt4C
Null Modem Cable
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
C104H/PCI |
|
| DTE Device |
DB25 Male |
|
| DB25 Male |
TxD | 2 | 2 | TxD |
RxD | 3 | 3 | RxD |
RTS | 4 | 4 | RTS |
CTS | 5 | 5 | CTS |
DSR | 6 | 6 | DSR |
DTR | 20 | 20 | DTR |
GND | 7 | 7 | GND |
DCD | 8 | 8 | DCD |