Full Details on Amazon.com : http://www.amazon.com/gp/product/B003SVWOUC?tag=tsukuyomi-20
I/O Magic Internal 24x DVD R/RW (Dual Format/Double Layer) Optical Drives|#14700365 IDVD24S
24x Int SATA Drive
Record up to 85GB of data or four hours of video
Dual Format - Choose the type of media that best suits your system
Double Layer - Double the storage capacity with double layer DVD discs