Optical info is a spin off utility from the popular System Spec - system information program which can already display this information regarding optical drives.
The purpose of this utility is to detect the optical drives (CD / DVD drives) Read/Write capabilities. When looking at the front of a computer which is not your own it is often difficult to tell whether the optical drive installed is either a CD ROM, CD Writer, CD Rewriter, DVD ROM, CD Rewriter + DVD Combo, DVD/CD Rewriter etc. More Info »
A utility like this is useful because CD and DVD drives dont often display their capabilities in the front and sometimes even if they do, they still cant been seen due to the design of the PCs case.
People quite often have more than one optical drive installed in their machine. They can have for example the original CD ROM or Writer drive and also a newer DVD drive. Another advange of this utility is allows you to see by selecting the drive letter for one of the drives, which is which. It also allows you to see which of the two or more drives is the faster for reading / writing.