MSI KT4 Ultra User Manual page 40

SER1 & SER2 Pin Definition
Pin
1
3
5
7
Optional Serial ATA cable
MSI Reminds You...
Please do not fold the serial ATA cable in a 90-degree angle,
which will cause the loss of data during the transmission.
Signal Pin Signal
GND 2 TXP
TXN 4 GND
RXN 6 RXP
GND
Connect to SER1 or SER2
Hardware Setup
Take out the dust cover and
connect to the hard disk
devices
2-19