IBM 73P4518 manual Read speeds, Write speeds, Media, All power modes

Read speeds:

Media	All power modes
DVD-ROM (single layer)	6X Max.
DVD-ROM (dual layer)	6X Max.
DVD-R (4.7 GB)	4X Max.
DVD-RW (4.7 GB)	4X Max.
DVD-video	4X Max.
DVD-RAM (4.7/9.4 GB)	2X Max.
DVD-RAM (2.6 GB)	1X Max.
DVD+R	4X Max.
DVD+RW	4X Max.
CD-ROM	20X Max.
CD-R	20x Max.
CD-RW	20X Max.
CD-DA (DAE)	20X Max.

Write speeds:

Media

CD-R

CD-RW

All power modes

8X Max.

8X Max.

A-2IBM USB 2.0 CD-RW/DVD-ROM Drive: User’s Guide