13
Secondary IDE Connector
Pin 1
10. IDE activity LED: HDLED (SMI S/W 1&3)
This connector connects to the hard disk activity indicator light on the case.
IDE (Hard Drive) LED
-
+
1
2
3
4
SMI
HDL
ED
11. Turbo LED switch: TBLED
The motherboard‘s turbo function is always on. The turbo LED will remain constantly
lit while the system power is on. You may wish to connect the Power LED from the
system case to this lead. See the figure below.
12. Reset switch lead: RESET
This 2-pin connector connects to the case-mounted reset switch for rebooting your
computer without having to turn off your power switch. This is a preferred method of
rebooting in order to prolong the life of the system‘s power supply. See the figure
below.
13. Keyboard lock switch lead: KEYLOCK
This 5-pin connector connects to the case-mounted key switch for locking the
keyboard for security purposes. See the figure below.
14. Speaker connector: SPK
This 4-pins connector connects to the case-mounted speaker. See the figure below.
System Case Connections
GND
GND
GND
Turbo LED
Reset SW
Keyboard
Lock
Power LED
VCC
VCC
GND
Turbo SW
VCC
NC
GND
GND
NC
Speaker
15. IR infrared module connector: IR1
