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2.7.5
Power LED and keyboard lock connector (JFP2/PWR_LED &
KEY LOCK)
(JFP2/PWR_LED & KEY LOCK) is a 5-pin connector for the power on LED and Key
Lock function. Refer to Appendix B for detailed information on the pin assignments.
The Power LED cable should be connected to pin 1-3. The key lock button cable
should be connected to pin 4-5. There are 3 modes for the power supply connection.
The first is "ATX power mode"; the system turns on/off by a momentary power button.
The second is "AT Power Mode"; the system turns on/off via the power supply switch.
The third is another "AT Power Mode" which makes use of the front panel power
switch. The power LED status is indicated in the following table:
Table 2.2: ATX power supply LED status (No support for AT power)
Power mode
PSON2
(on back plane)
jumper setting
System On
System Off
System Suspend
(S3)
System Suspend
(S4)
2.8
Display Port and HDMI Common Connector
(DP1+HDMI1)
AIMB-275 A2 User Manual
LED
(ATX Power Mode)
(On/off by
momentary button)
pins 2-3 closed
On
Off ( Windows 7)
Slow Flashes (Window 8)
Fast Flashes
Slow Flashes
18
LED
LED
(AT power Mode)
(AT power Mode)
(On/off by switching
(On/off by front
power supply)
panel switch)
Connect pins 1 & 2
pins 1-2 closed
to panel switch via
cable
On
On
Off
Off
NA
NA
NA
NA
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