5.25 Inch Drive Bay 5.25 Inch Drive Bay 5.25 inch external drive bays can hold several different types of hardware. A CD-R drive can read and write information, but cannot erase it. CD-RW drive, can also read and write, but it will also erase the data and rewrite, which is very useful if you save something and later wish to remove it.
Write speeds are considerably slower than read speeds.
At the present time, the fastest write speeds are around 4x to 8x.