Hardware Configuration
ROBO-8714VG2A User’s Manual
2-11
Note:
The Reference Voltage on MIC signal offers 2.25V~2.75V with 5mA drive.
J26/J27:External LAN Access LED Connector (ZR1 not support)
PIN No.
Signal Description
1
+5V (270 ohm pull-up for HDD LED+)
2
HDD Active # (HDD LED-)
J28: Case-open Detection Connector
PIN No.
Signal Description
1
Case-open Signal (Active low)
2
Ground
J29: SMBus Connector
PIN No.
Signal Description
1 SMBus
Clock
2 N/C
3 Ground
4 SMBus
Data
5 +3.3V
J30 : 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