DVD-ROM RD (Read Only Memory) Capacity from 2GB to 8GB.

DVD-ROM RW (Rewriteable) The Capacity is 4,7GB , but you can only Use 4,3GB.

CD-ROM RD (Read Only Memory) Capacity from 2GB to 8GB.

CD-ROM RW (Rewriteable) Capacity from 700MB TO 800MB



We need a "PEN DRIVE" Port.They have diferent capacities from128MB to 4gb.The standard capacity is 1 or 2GB , So they have more capacity than a flopyDisk.They are faster and very easy to run.
You can store all kinds of Files and Folders.You can also store Programes , So you can Install them in another computer or in the Pen drive:
They are becoming cheaper day by day.Nowadays you can get a 2GB PEN DRIVE for less than 20euros.