2-4
MS-7021 ATX Mainboard
The back panel provides the following connectors:
Back Panel & Power Supply
ATX 20-Pin Power Connector: JWR1
This connector allows you to connect to an ATX power supply.
ATX 12V Power Connector: JPW1
This 12V power connector is used to provide power to the CPU.
PIN SIGNAL
11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V
JWR1 Pin Definition
PIN SIGNAL
1 GND
2 GND
3 12V
4 12V
JPW1 Pin Definition
JPW1
1
3
4
2
JWR1
10
1
20
11
Mouse
Keyboard
USB
Parallel
COM A
LAN
USB
L-out
L-in
MIC
SPDIF-Out
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