7 in 1 Multifunctional Optical Drive Desktop USB3.0 External Drive Universal Optical Drive Case Expansion Dock Hub Interface: 2 USB interfaces, 1 SD card slot, 1 TF card slot (supports reading up to 1TB) Interface: USB3.0 (compatible with 2.0 and 1.0) + Type-C interface Reading: CD-ROM 24X, DVD-ROM 8X; Burning: DVD+R 8X, DVD-R 8X; DVD+RW 8X, DVD-RW 6X; DVD+R9 6x (DL, dual layer, plus 8.5G dual layer recording), DVD-R9 6X (DL, dual layer, 8.5G dual layer recording), DVD-RAM 5x; CD-R 24X, CD-RW 24X. (Full read and write speeds are the highest among external optical drives) Cache Size: 2MB Plug and play without driver installation (except for Windows98SE system) Compatible with Windows98SE/ME/2000/XP/Linux/Mac OS/win7, win8, win10, win11 operating systems Supports DOS startup (booting and installing operating systems like XP) Simple packaging size: 16.5*16.5*2.8cm