SQ578
3-16
Pin
Signal Name
1
Ground
2
Keyboard
3
LED-
4
No Connect
5
LED+
1
13
24
12
3.5.7
HDD LED Connector (2-pin)(Pin 12 and 24 of J31)
The SQ578 supports one straight 4 pin header for connecting to front pannel Hard Disk
activity LED indicator.
Pin
Signal Name
12
LED-
24
LED+
1
13
12
24
3.5.8
Reset Switch Connector (2-pin) (Pin 21 and 22 of J31)
This connector supports the front pannel case-mounted reset. It is advised that the reset
switch be used for rebooting the system in order to extend the life of the system’s power
supply.
Pin
Signal Name
21
Reset
22
Ground
1
13
24
12
3.5.9
Speaker Connector (4-pin) (Pin 7-10 of J31)
A 1x4 straight header is available to drive a chassis-mounted speaker if desired.
Pin
Signal Name
7
Speaker-
8
No connect
9
No connect
10
1
13
24
12
Содержание SQ578
Страница 1: ...SQ578 Pentium PCI Mainboard User s Manual...
Страница 4: ......
Страница 28: ......
Страница 48: ...SQ578 4 20 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15...
Страница 57: ...SQ578 Documentation Rev Number A02 September 1997...