Hardware Configuration
ROBO-8713 Series User’s Manual
2-13
J27 : COM1 Serial Port 1 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
J28: External Keyboard Connector
PIN No.
Signal Description
1
Keyboard
Clock
2
Keyboard
Data
3
N/C
4
Ground
5
5V
Dual
J29: Case-open Detection Connector
PIN No.
Signal Description
1
Case-open Signal (Active low)
2
Ground
J30:External LAN Access LED Connector
PIN No.
Signal Description
1
+5V (270 ohm pull-up for HDD LED+)
2
HDD Active # (HDD LED-)
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