Samsung TS-H542A-WRCH - Manual (Page 19)

Turn the PC off and pull out the drive.
Remove any foreign objects from the surface of the drive using soft cloth.
- Do not use benzene, paint thinner, or any other solvents.
- Cleaning the interior of the unit with such things as a cotton
swab may cause failure or loss of functionality.
Storing/Cleaning Drive and Disc