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1.14.11
Power LED and keyboard lock connector (JFP3 /
PWR_LED&KEY LOCK)
(JFP3 / 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",
system is on/off by a tentative power button. The second is "AT Power Mode", system
is on/off by the switch of the Power supply. The third is another "AT Power Mode"
which is using the front panel power switch. The power LED status is indicated as fol-
lowing table:
Table 1.12: ATX power supply LED status (No support for AT power)
Power Mode
PSON1
(On Back plane)
Jumper Setting
System On
System Status
System Off
1.14.12
USB 2.0 Connector (USB56, USB78)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up
to 480 Mbps connection speed.
AIMB-258 User Manual
LED (ATX Power Mode)
(On/Off by tentative
button)
2-3 pin closed
On
Fast flashes
Slow flashes
LED (AT Power Mode)
LED (AT Power Mode)
(On/Off by switching
(On/Off by front panel
power supply)
switch)
1-2 pin closed
Connect 1-2 pin cable
with switch
On
On
Fast flashes
Fast flashes
Off
Off
24
USB56
USB78
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