Samsung SW-248BRNS - Manual (Page 8)

To install your CD-R/RW Drive in the PC, proceed as follows.
Installing the CD-R/RW Drive
Connecting the Cables
Setup
Make sure that the PC is powered off and disconnected from any power source.
If necessary, attach a horizontal bracket to both sides of the drive.
Remove the cover from a free expansion slot and install the CD-R/RW drive, as shown in the illustration.