K7I741CX Mainboard
12
Power LED Connector (PWLED)
The mainboard provides a 3-pin power LED header. If there is a 3-pin power LED cord on your case
front panel, you can attach it to this 3-pin header on the SW/LED header. Then the power LED will
illuminate while the system is powered on.
Hard Drive LED Connector (HDLED)
If your case front panel has a hard drive LED cable, attach it to this header. The LED will flicker
when there is hard disk drive activity.
Power-on Switch (PWR)
This header can be attached to a power switch cable on your case front panel. You can turn your
system on or off by pressing the button attached to this power switch cable.
Reset Switch (RST)
This header can be attached to a momentary SPST switch (reset button) cable on your case front
panel. The switch is normally left open. When the switch closed, it will cause the mainboard to reset
and run the POST (Power-On Self Test).
SPEAKER (SPEAK)
A speaker cable on your case front panel can be attached to this header. When you reboot the
computer, this speaker will issue a short audible (beep). If there are problems during the Power On
Self-Test, the system will issue an irregular pattern of audible beeps through this speaker.
Headers & Jumpers
Front USB Headers: USB1/USB2
This mainboard provides two onboard USB 2.0/1.1 ports (back panel) that attach to USB devices.
There are two additional USB headers that can be connected by a cable to four more USB ports on
the front panel of your case giving you a possible six USB 2.0/1.1 ports.
Pin
Assignment
Pin
Assignment
1 +5V
2 +5V
3 USB-
4 USB-
5 USB+
6 USB+
7 Ground
8 Ground
USB1/2
9 N/A
10
N/A
Serial Interface Header: COM
This mainboard provides a COM header for you connecting an additional serial connector on the
back panel of your case. Attach the cable of serial connector (Optional) onto this header, and then
you can use the serial connector connecting with a mic, modem or other peripheral device.
