Warning: To avoid damaging your motherboard
and components, please use a power supply that
supports a 24-pin, two 4-pin and two 8-pin power
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 connectors are optional; however,
Supermicro recommends that these connectors
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 (JPW2/3)
and two 4-pin power connectors (JPW4/5) are
located on the motherboard. These power con-
nectors meet the SSI EPS 12V specication
and must be connected to your power supply to
provide adequate power to the system. 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 (Req'd)
D. JPW4: 4-pin Processor
PWR (Req'd)
E. JPW5: 4-pin Processor
PWR (Req'd)
A
B
C
(Required)