User`s guide

Chapter 5: Advanced Serverboard Setup
5-27
5-11 Connecting Cables.
20-pin Proprietary Power Connectors
There are two 20-pin main power supply connec-
tors (PWR1, PWR2) and a 4-pin auxiliary power
connector (JP10) on the motherboard. These
power connectors meet the SSI EPS 12V speci-
cation. For power supply to work properly, please
follow the instructions given below. See the table
on the right for pin denitions. Also refer to the
layout below for the PWR connector locations.
20-pin Main Power Connector Pin
Denitions
Pin # Denition Pin # Denition
11 PS On 1 Ground
12 5VSB 2 Ground
13 Ground 3 Ground
14 Ground 4 Ground
15 Ground 5 Ground
16 NC2 6 NC1
17 12V 7 12V
18 12V 8 12V
19 12V 8 12V
20 12V 10 12V
!
Note 1: You cannot use both 20-pin power connectors: PWR1 (the right
connector) and PWR2 (the left connector) as input power supply at the
same time. Only one connector can be used for input power supply to
the motherboard at a time. For proper use of these proprietary PWR
Connectors, please customize your PWR cables based on Supermicro
PWR Connector Pin-Out Denitions listed above.
Note 2: T he bla ck squ ar e (d ot) on a p owe r c o nn ect or ind ic ates th e lo c at i on
of Pin 1. (See the pictures below for the power cable connections.)
A: Right 20-pin connector & cable (PWR1)
B: Left 20-pin connector & cable (PWR2)
C: 4-pin PWR Connector