Turn your laptop into a workstation with this compact USB Hub (6.7cm x 4cm x 1cm) allowing you to connect to Mice, keyboards, SD cards and external hard drives simultaneously. Expand the connectivity of a compact 2 in 1 laptop/tablet device, simultaneously connecting 2x USB 3.0 cables/devices, 2x Micro SD cards, 1x SD card, and a Micro USB cable. Backward compatible with USB 2.0/1.1. SD and TF Card readers support SD, SDHC, MMC4.0, Micro SD, and Micro SDHC cards. Plug and Play and Hot swapping - the Micro USB input allows for a micro USB power supply to be plugged in for extra power for those heavy powered peripheral devices, such as external hard drives.