Hardware Configuration
ROBO-8777VG2A User’s Manual
2-8
J48: Front Panel Connector
PIN No.
Signal Description
PIN No.
Signal Description
1
+3.3V(pull up 330 ohm)
2
Ground
3
+3.3V(Pull up 330 ohm)
4
H.D Active Signal
5
3V_DUAL(pull up 1K ohm)
6
PWR_Button Signal
7 Reset
Signal
8 Ground
J49: External Speaker Connector
PIN No.
Signal Description
1
Speaker Signal Output (Open-drain w/
internal series 33 Ohm)
2 N/C
3 Ground
4 +5V
Note:
The pull-high voltage of external speaker is limited at 5V maximum.
J50: ATX Power Control Connector
PIN No.
Signal Description
1
ATX Power Good Signal (PW-OK)
2
ATX 5V Stand-by (5VSB)
3
ATX Power On Control (PS-ON)
4 Ground
