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Chapter 1 Motherboard 4S661QP
mPGA478B
Socket 478
RTL
ALC650
Battery
BIOS
IT8705F
ITE
SIS
963UA
SIS
661FX
RTL
8201BL
1.6.10. Front Panel Connectors: PANEL1
PSSW
The system power is controlled by a momentary switch
connected to this lead. Pushing the button once will switch
the system ON.
Power LED Lead (PW_LED)
The system power LED lights when the system power is on.
Speaker Connector (SPEAKER)
The speaker (onboard or offboard) provides error beep code
information during the Power Self-Test when the computer
cannot use the video interface. The speaker is not connected
to the audio subsystem and does not receive output from the
audio subsystem.
Hard Drive LED Connector (HD_LED)
This connector supplies power to the cabinet IDE activity LED.
Read and write activity by devices connected to the Primary or
Secondary IDE connectors will cause the LED to light up.
Front Panel Connectors
PS SW
11
1 3
1 5
1 7
1 9
1
3
5
7
9
1 2
1 4
1 6
1 8
2 0
2
4
6
8
1 0
RST
HD LED
SPEAKER
PW LED
(+)
(+)
(+)
(+)
The connector can be connected to a reset switch. Press this
reset switch to restart system.
Reset Switch Lead (RST)
