Faster delivery: It usually takes about 3-7 days to deliver from United States/Canada/China warehouse External DVD Drive CD drive external USB, no need for external driver and Power supply. Just plug it into your USB port, then our External dvd burner will be detected. USB 3. 0 external cd dirve is a perfect companion for computers without the internal drive. SPECIFICATION Reading Speed: CD-ROM: 24x Max; DVD-ROM: 8x Max; DVD- ROM (DL): 6x Max Writing Speed: CD-R: 24x (Max); CD-RW: 8x(Max); DVD±R: 8X(Max); DVD±R DL: 4X (Max); DVD-R± 9: 2. 4x (Max) ReWriting Speed: DVD+RW: 4X(Max); DVD-RW: 4x(Max); CD-RW: 10X (Max); DVD-RAM: 3x (Max) Memory Cache: 2M Compatible Operating System: Windows, Linux, Mac OS (with USB port) Supported Formats: DVD-ROM, DVD-video, CD-R/RW, CD-ROM/XA, CD-ROM, CD-EXTRA, CD-TEXT