Hardware Configuration
ROBO-8713BVG2 User’s Manual
2-8
J20 : COM2 Serial Port 2 Connector
PIN No.
Signal Description
RS-232
1
DCD (Data Carrier Detect)
2
RXD (Receive Data)
3
TXD (Transmit Data)
4
DTR (Data Terminal Ready)
5 GND
(Ground)
6
DSR (Data Set Ready)
7
RTS (Request to Send)
8
CTS (Clear to Send)
9
RI (Ring Indicator)
10 N/C
J21 : COM1 Serial Port 1 Connector
PIN No.
Signal Description
RS-232 RS-422
RS-485
1
DCD (Data Carrier Detect)
TX-
DATA-
2
RXD (Receive Data)
TX+
DATA+
3
TXD (Transmit Data)
RX+
N/C
4
DTR (Data Terminal Ready)
RX-
N/C
5 GND
(Ground)
GND
GND
6
DSR (Data Set Ready)
N/C
N/C
7
RTS (Request to Send)
N/C
N/C
8
CTS (Clear to Send)
N/C
N/C
9
RI (Ring Indicator)
N/C
N/C
10 N/C
N/C
N/C
Note:
J21 (COM1) could be configurable as RS-232/422/485 with jumper JP1
J22: External Keyboard/Mouse Connector
PIN No.
Signal Description
PIN No.
Signal Description
1
Mouse Data
6
Keyboard Data
2 N/C
7 N/C
3 GND
8 GND
4 VCC
9 VCC
5
Mouse Clock
10
Keyboard Clock
