Equipment for the digital compact cassette was able to playback analog compact cassettes as well; recording could only be done to DCC, though. A DCC tape is similar in appearance to a regular cassette, except that it has reel access holes on only one side, and has a shutter covering both the tape and reel access holes, similar to the shutter on a floppy disk. This protects the tape and also prevents it from being accidentally inserted into an analog cassette deck.