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2-8 Chapter 2
(4). Front Panel Switches & Indicators Headers
These headers are used for connecting switches and LED indicators on the chassis front panel.
Watch the power LED pin position and orientation. The mark “+” align to the pin in the figure below
stands for positive polarity for the LED connection. Please pay attention to connect these headers. A
wrong orientation will only cause the LED not lighting, but a wrong connection of the switches could
cause system malfunction.
• SJ1:
Connects to ACPI LED cable of chassis front panel.
• SPK1:
Connects to the System Speaker cable of chassis.
• HDDLED (Pin 1, 3):
Connects to the HDD LED cable of chassis front panel.
• RST (Pin 5, 7):
Connects to the Reset Switch cable of chassis front panel.
• MSGLED (Pin 2, 4):
Connecting pins 2 and 4 to a single or dual color front panel mounted LED provides power on/off,
sleep, and message waiting indication.
• PWR (Pin 6, 8):
Connects to the Power Switch cable of chassis front panel.
KV-85