MSI J-TX98 R2 Manual page 13

This connector connects to a standard AT power supply. To connect the leads
from the power supply, ensure first that the power supply is not plugged. Most
power supplies provide two plugs (P8 and P9), each containing six wires, two
of which are black. Orient the connectors so that the black wires are located
in the middle.
Using a slight angle, align the plastic guide pins on the lead to their receptacles
on the connector. Once aligned, press the lead onto the connector until the
lead locks into place.
2. Power Connector: ATX Power Connector (20-pins block): PW2
ATX Power Supply connector. This is a new defined 20-pins connector that
usually comes with ATX case. The ATX Power Supply allows to use soft
power on momentary switch that connect from the front panel switch to 2-pins
Power On jumper pole on the motherboard. When the power switch on the
back of the ATX power supply turned on, the full power will not come into the
system board until the front panel switch is momentarily pressed. Press this
switch again will turn off the power to the system board.
3. Keyboard Connector (5-pins female): J4
This connection is for a standard IBM-compatible keyboard. May also be
known as a 101 enhanced keyboard.
RED
RED
RED
P9
WHT
BLK
BLK
BLK
BLK
BLU P8
YLW
RED
ORG
Power Connector on Motherboard
PIN ROW2
1 3.3V
2 -12V
3 GND
4 Soft Power On
5 GND
6 GND
7 GND
8 -5V
9 +5V
10 +5V
ATX Power Connector
Pin 1
12
+5V
-5V
GND
-12V
+12V
+5V
PG
Power Plugs from Power Supply
ROW1
3.3V
3.3V
GND
5V
GND
5V
GND
Power OK
+5V (for Soft Logic)
+12V