Samsung TS-H542A-WRCH - Manual (Page 10)

Connecting the Power Cable
Hold the power cable (with four pins) in the power box within the computer with the cutoff edges( )
facing up and connect it to the power port in the back of the DVD R/RW Drive
A - Cutoff edges
1 +5V DC
2 Ground
3 Ground
4 +12V DC
Improperly connected power cable may cause malfunction. Check the direction of the
power cable and the cutoff edges before connecting the cable.
Connecting E-IDE Cable
When you use one E-IDE cable
Set the jumper to SL (slave) in the Master/Slave port in the back of the DVD R/RW Drive.
and Connecting Cables
Installing DVD R/RW Drive