Mine has 1 but my system can hold up to 4 DVD drives at once
CD drivers and DVD drivers are both equally common. CD drives is a drive that reads a compact disc and that is connected to an audio system. A DVD drive is an optical disc storage media format.
one only it can be up to 4
One can buy dvd cd drives online through sites such as Amazon and eBay. Stores like Staples and Best Buy also sell dvd cd drives. Target and Sears, some locations, also sell dvd cd drives.
CD & DVD are examples of Secondary Storage Devices.
CD & DVD burners are optical drives that can write data to CDs or DVDs.
Best Buy is one of the best places to go to purchase cd and dvd drives. They will have a huge selection and you can choose how many gigs you want and what speed you want.
Computers used to have separate drives for putting in a CD and Playing a DVD. Now, especially with Laptops, Most Computers and Laptops have a multifunction unit in which both DVD'S and CD'S can be read, but again, some computers still do have separate drives, purely because the performance is better, e.g. A CD may upload better onto iTunes for example in A CD drive rather than a CD/DVD drive.
The drives are normally the same CD and DVD is the same drive, and if not it says it on the front of the drive
External drive bays
The two types of CD-ROM are DVD&CD drives
The fasted CD speed available is 52x, while DVD's spin at 16x.
DVD and CD share both UDF file system