Installing The Power Supply - TYAN S8812 User Manual

2.11 Installing the Power Supply

There are three power connectors on your S8812. It is required that you have an
EPS12V power supply which has one 24-pin and two 8-pin connectors.
 24-pin (PWR1)
 8-pin (PWR2, PWR3)
NOTE: Please be aware that ATX 2.x, ATX12V and ATXGES power
supplies may not be compatible with the board and can damage the
motherboard and/or CPU(s).
Applying power to the board:
Connect the EPS12V 8-pin power connectors. Both PW2 and PW3 are for

CPU loading. With light load processors, such as HE model, one 8-pin
connector is OK. With SE model processors, both 8-pin power connectors
are required.
 Connect the EPS/12V 24-pin power connector.
 Connect power cable to power supply and power outlet.
NOTE: You must unplug the power supply before plugging the power
cables to motherboard connectors.
Signal
+3.3V
+3.3V
GND
+5V
GND
+5V
GND
Power OK
5VSB
+12V
+12V
+3.3V
Signal Pin
GND 1
GND 2
GND 3
GND 4
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Pin Pin
1 13
2 14
3 15
4 16
5 17
6 18
7 19
8 20
9 21
10 22
11 23
12 24
Pin Signal
5 +12V
6 +12V
7 +12V
8 +12V
Signal
+3.3V
-12V
GND
PS_ON
GND
GND
GND
RES
+5V
+5V
+5V
GND