ROCKETEK RT-SGO737 2 USB 3.0 + Micro USB Interface Hub for Microsoft Surface Go, with 2 TF Card & SD Card Slots 1. High-speed USB 3.0, ultra-high-speed 5Gbps, 10 times faster than USB 2.0. Data is transferred to a large number of USB devices such as USB memory sticks, USB sticks, card readers, keyboards, mice and other USB devices. 2. Powerful memory card reader, support SDXC, SDHC, SD, MMC, RS-MMC and Micro SD, TF, Micro SDXC, Micro SDHC, UHS-I memory card, support card capacity up to 128GB. 3. Plug and play, no need to install drivers. 4. Ultra-thin and compact, with 6 ports, support data transfer rate of up to 5Gbps, faster than ordinary USB 2.0, and Micro USB port, which can be powered when connected to power-consuming devices such as external hard drives. 5. Made of ABS with anti-drop impact function. 6. Measuring 2.7x 1.7 x 0.5 inches and weighing just 0.1 pounds, it is easy to carry around for home use, office, business and travel. Note: Do not charge Microsoft Surface Go. Product specifications: 1. Working voltage: 5V. 2. Transmission speed: up to 5Gbps. 3. Maximum capacity: up to 128GB. 4. Support SDHC, Micro SDHC. 5. Support USB 2.0 3.0 card reader. 6. Operating system support: Windows 78 8.1 and above.