2
）
HD LED Pins (J4 pin3,pin4 for HDD LED)
As a rule, there is a HD LED on the panel of chassis, while HD device (like hard Disk) is
reading or writing (no matter which HD device), LED will flash, shows that IDE device is
running. Connect IDE LED on chassis panel and these pins (pin3 is LED anode)
3
）
Buzzer Pins
（
Pin5/Pin6 for SPEAKER
）
To connect external speaker pins
4
）
Reset Button Pins(pin7,pin8 for RESET )
Connect this pins and RESET switch on panel of chassis with cable. When system can not
work on, reset can make system restart, without turning on/off the power, thereby it can
prolong system life span
5
）
Power On/Off Control Pins (pin9, pin10 for POWER BUTTON)
Connect these two pins with bounce switch on panel of chassis, to switch-on or switch-off the
power.
2.5.13 SO-DIMM Slot
（
SO-DIMM
）
Board with one single channel SO-DIMM slot supports DDRIII 800/1066 RAM upto 4GB.
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