Ugreen TF / SD / micro SD card reader for USB 3.0 Compact Ugreen SD and micro SD card reader. Made in USB 3.0 (3.1 Gen 1) standard, provides fast file transfers of up to 5 Gbps. Uses 2 cards at the same time This miniature reader allows you to read and write two memory cards simultaneously. There is no need to pull out one card to connect the other. Easily transfer files between cards or to and from your computer's memory. The The USB 3.0 (3.1 Gen 1) standard enables data transfer rates of up to 5 Gbps. Types of cards supported The reader can read the following types of memory cards: SDXC / SDHC / SD / MMC / RS-MMC / Micro SD / TF / Micro SDXC / Micro SDHC / UHS-I Specifications: USB standard: USB 3.0 (3.1 Gen 1) SuperSpeed (5 Gbit/s) Compatibility: SDXC / SDHC / SD / MMC / RS-MMC / Micro SD / TF / Micro SDXC / Micro SDHC / UHS-I Maximum supported card capacity: 512 GB Operating System: Windows XP / Vista / 7/8 / 8.1 / 10, Mac OS, Linux Plug & Play, no need to install drivers Dimensions: 36mm x 50mm x 13mm Cable length: 15 cm It can read two cards simultaneously