Warning: To avoid damaging your motherboard and
components, please use a power supply that supports
a 24-pin, two 8-pin power and one 4-pin connectors.
Be sure to connect the 24-pin and the 8-pin power
connectors to your power supply for adequate power
delivery to your system. The 4-pin power connector
is optional; however, Supermicro recommends that
this connector also be plugged in for optimal power
delivery.
2-7 Connecting Cables
Power Connectors
A 24-pin main power supply connector(JPW1), two
8-pin CPU power connectors (JPW2/JPW3) and a
4-pin power connector are located on the mother-
board. These power connectors meet the SSI EPS
12V specication. These power connectors must
also be connected to your power supply. See the
table on the right for pin denitions.
ATX Power 24-pin Connector
PinDenitions
Pin# Denition Pin # Denition
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 COM 3 COM
16 PS_ON 4 +5V
17 COM 5 COM
18 COM 6 +5V
19 COM 7 COM
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 COM 12 +3.3V
12V 8-pin PWR Con-
nector
PinDenitions
Pins Denition
1 through 4 Ground
5 through 8 +12V
A. JPW1: 24-pin ATX
PWR (Req'd)
B. JPW2: 8-pin Processor
PWR (Req'd)
C. JPW3: 8-pin Processor
PWR, or
D. JPW4: 4-pin PWR (rec-
ommended)
A
B
C
(Required)
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