Multifunctional CD DVD +/-RW DriveKadlun External CD DVD Drive for laptop has an independent SD / TF card slot, It can transfer photos and videos directly from SD / TF card into the computer, USB Hard Drive and flash drive. CD drive has additional 1 USB 3.0 ports and 3 USB2.0 ports. which can be used to connect the U disk and charge your phone or other electronic devices.NOTE: SD card and TF card cant work together at the same time, only choose one each time.The removable hard disk drive is available only for USB 2.0 ports, not for USB 3.0 ports. Plug and Pay CD/DVD Drive for PCThe DVD Drive External can easily connect to a computer with the Type-C or USB 3.0 interface. Just plug it into your USB port and the DVD drive will be automatically recognized within seconds.