Function 1: external dvd drive Function 2: Dvd drive Function 3: external cd dvd burner Function 4: usb external cd player Function 5: external dvd player for pc Product name: Card expansion optical drive Interface type: USB 3.0 type c Optical drive type: CD burner Applicable size: 120mm, 80mm series optical discs Support for disks: DVD/CD/VCD/BD Transmission speed: USB3.0 pplicable models: Laptop/desktop//For computer Installation Method: External Drive Type: DVD-RW Material: Plastic colour: black Package Contents: 1 x External CD Burner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.