Lenovo Blu-ray Burner/HD DVD Player User Manual page 30

Write speeds
Media
CD-R
CD-RW
DVD-R
DVD+R
DVD-R Dual Layer
DVD+R Double Layer
DVD-RW
DVD+RW
DVD-RAM
BD-R
BD-RE
BD-R Dual Layer
BD-RE Dual Layer
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Lenovo Blu-ray Burner / HD DVD Player User's Guide
Write speed
40X Max
24X Max
16X Max
16X Max
4X Max
4X Max
6X Max
8X Max
5X Max
4X Max
2X Max
4X Max
2X Max