One of the key features for any computer drive is whether it can read another format. For instance, you might need a CD/DVD drive on your computer to install Windows from the disc, but if you want to play DVDs or CDs, it needs an associated second media player program on the PC (like Apple’s iTunes) and a copy of each corresponding program on an accompanying DVD. Likewise, some people like having multiple operating systems installed simultaneously on their desktop and find that they need access to different types of discs in order to read them all.