Dual Channel Introduce; Atx 12V Power Supply Connectors & Power Switch; Hard Disk Led Connector ( Hd_Led ); Reset Switch (Reset) - QDI P5I915PL Manual

Chapter 2

Dual channel introduce

DIMM1
DIMM2
To using dual channel DDR, DIMM1/DIMM2 is a combination.The following fig-
ure illustrates the dual channel DDR installation:
1. two same memory
DIMM1
DIMM2
ATX 12V Power Supply Connector & Power Switch (POWER Switch)
The power switch (POWER SW) should be connected to a momentary switch. When
powering up your system, first turn on the mechanical switch of the power supply (if one
is provided), then push once the power switch. When powering off the system, you
needn' t turn off the mechanical switch, just push once the power switch. P5I915PL series
mainboard only support ATX12V power.
Note: please pay attention to orientation and sequence of pins when using 20 pins ATX
power supply connector
POWER SW
Hard Disk LED Connector (HDD_LED)
The connector connects to the case' s IDE indicator LED indicating the activity status of IDE
hard disk. The connector has an orientation. If one way doesn' t work, try the other way.

Reset Switch (RESET)

The connector connects to the case' s reset switch. Press the switch once, the system
resets.
+12V Power Supply Connector
1
GND
GND
ATX Power Supply Connector
+3.3VDC COM
-12VDC
PS-ON
1
+3.3VDC +5VDC
+3.3VDC
COM
7
12V
12V
+5VDC
COM
COM +5VDC
-5V/NC +5VDC
COM COM
PWR OK
+12VDC +3.3VDC
+5VDC
5VSB
COM +12VDC
COM
P5I915PL