3. Hardware Installations
28
SPI-8550-LLVAS
Front Panel Connector: CN21
This header can be connected to a front panel power switch. The front panel connector includes headers
for these I/O connections:
Power Switch (Power BT)
This header can be connected to a power push switch for ATX power supply.
Reset Switch (RESET)
This header can be connected to a reset push switch.
Power LED
This header can be connected to an LED that will light when the computer is powered on.
Hard drive activity LED (IDE ACT)
This header can be connected to an LED to provide a visual indicator that data is being read from or
written to an IDE hard drive. For the LED to function properly, the IDE drive must be connected to the
onboard IDE controller.
Speaker (BUZZER)
A speaker can be installed on this product as a manufacturing option. The speaker is connected by a
jumper on pins 9, 11, 13, 15 of the front panel connector.
The speaker (on-board or off-board) provides error beep code information during the POST in the event
that 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.
Table 3.17.
Front Panel Connector
Pin No.
1
3
5
7
9
11
13
15
Function
Power BT
GND
RESET
GND
VCC
GND
GND
BUZZER
Pin No.
2
4
6
8
10
12
14
16
Function
VCC
IDE ACT
N.C.
VCC
VCC
Power LED
N.C.
N.C.
Speaker
Reset Button
Power LED
9, 11, 13, 15
5, 7
10, 12
Power Button
HDD LED
1, 3
2, 4
1
15
HDD Active Indicator LED
Power LED
Power Switch
for ATX
External Speaker
( E x . 8
Ω
0 . 2 5 W )
Reset Switch
CN21
16
15
2
1
Summary of Contents for SPI-8550-LLVAS
Page 7: ...vi SPI 8550 LLVAS...
Page 13: ...1 Introduction 6 SPI 8550 LLVAS...
Page 19: ...2 System Reference 12 SPI 8550 LLVAS...
Page 47: ...4 Jumper Setting 40 SPI 8550 LLVAS...
