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Here is an indication of the speed that a device can write data using a CD-R. A CD is about 74 minutes long so a 4x speed would record a CD in a quarter of that time.
This is the speed that a device can write data using a CD-RW. A CD is about 74 minutes long so a 2x speed would record a CD in a half of that time.
A CD that can be used only once to write data on using a CD-Writer.
A CD that can be re-used to write data on using a CD-Rewriter.
Acronym used to describe the writing process of devices such as CD-Rs.