11
ACPI LED function:
S0
S1
S3
S4/S5
LSJ1
Dark
Dark
Light
Dark
CHS1: Chassis Intrusion Detect
Pin 1-2
Function
Short
Case Open
Open
Case Close
Front Panel Connector
The front panel connector (PANEL1) provides a standard set of switch and
LED connectors commonly found on ATX or micro-ATX cases. Refer to the
table below for information:
PANEL1
Pin
Signal Name
Function
1
HD_LED_P
Hard disk LED pull up (330 ohm) to +5V
2
FP PWR/SLP
MSG LED pull up (330 ohm) to +5V
3
HD_LED_N
Hard disk active LED
4
FP PWR/SLP
MSG LED pull up (330 ohm) to +5V
5
RST_SW_N
Reset Switch low reference pull down
(100 ohm) to GND
6
PWR_SW_P
Power Switch high reference pull up
(10000 ohm) to +5V
7
RST_SW_P
Reset Switch high reference pull up
(1000 ohm) to +5V
8
PWR_SW_N
Power Switch high reference pull down
(100 ohm) to GND
9
RSVD
Reserved (do not use)
10
NC
No pin
Hard Drive Activity LED
Connecting pins 1 and 3 to a front panel mounted LED provides visual indica-
tion that data is being read from or written to the hard drive. For the LED to
function properly, an IDE drive should be connected to the onboard IDE inte r-
face. The LED will also show a ctivity for devices connected to the SCSI (hard
drive activity LED) connector.
Power / Sleep / Message Waiting LED
Connecting pins 2 and 4 to a single- or dual-color, front panel mounted LED
provides power on/off, sleep, and message waiting indication.
Reset Switch
Supporting the reset function requires connecting pins 5 and 7 to a momen-
