Product description 1. ?Convenient? - A very useful hub especially for those of you with limited built-in ports in your PCs, laptops, etc. 2. ?High efficiency? - All ports can work together at the same time and the full speed is available for all slots and also allows copying from card to card. 3. ?Compatibility? - You have the following options, three USB, M2 card, MMC card, MS card, SD card and a micro SD card. 4. ?Fast speed? - USB 3.0 with Super Speed 5 Gbit / s. no external power supply required. 5. ?Easy to use? - Low power consumption, suitable for desktop and notebook PC. Avoid the hassle of carrying multiple card reader adapters, and you can transfer photos, music and data with this combination. 6. ?Compact and portable design? - This compact and ultra slim USB 3.0 hub is portable enough for work and travel and will. Plug and play without driver installation.