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2.7 Connectors
Power Connections
Main Power and GPU Power Connectors
The 20-pin main power connector (JPWR5) is used to provide power to the motherboard,
while the 8-pin GPU power connector (JPWR6) can be connected to power the GPU card.
These power connectors meet the SSI EPS 12V specification. See the tables below for pin
definitions.
Main Power 20-pin Connector
Pin#
Definition
11
PS_ON_N
12
P5V_STBY
13
GND
14
GND
15
GND
16
NC
17
P12V
18
P12V
19
P12V
20
P12V
Required Connection
USB1
USB0
JUIDB1
LE1
VGA
LAN2
Intel
Aspeed
X550
AST2500
LEDM1
MH10
BT1
M.2-H_1 PCI-E 3.0 X4
Intel
C621
M.2-H_2 PCI-E 3.0 X4
JBT1
CPU
S-SGPIO1
I-SGPIO2
1
FAN4
FAN3
IPMI CODE
SAN MAC
BAR CODE
MAC CODE
JPI2C1
Pin Definitions
Pin#
Definition
1
GND
2
GND
3
GND
4
GND
5
GND
6
NC
7
P12V
8
P12V
9
P12V
10
P12V
LAN1
IPMI_LAN
USB4/5(3.0)
MH12
SP1
LE3
LE4
BIOS LICENSE
FAN2
FAN1
JL1
45
Chapter 2: Installation
8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
GND
5 - 8
P12V (12V Power)
1. 20-Pin Main PWR
2. 8-Pin GPU PWR
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