Feature Caution:The card reader can only read one kind of card at the same time, for example: inserting an SD card (in fact, most people will not read multiple cards at the same time). While reading the card, the HUB can work at the same time without affecting each other; Both the 2.0 HUB function and the multi-in-one card reader, the workmanship quality is super good One USB interface can be expanded to three, compact, practical and convenient, expand three 2.0USB interfaces, each power supply can be up to 500MA Adopt the second generation USB HUB controller Directly connected to the computer, no external power supply required, easy to use The computer automatically recognizes and installs, no need for drivers, plug and play, plug and unplug USB2.0 interface, support USB1.0/1.1, transfer speed 1.5/12/480MBPS Built-in current overload short circuit protection device Card reader plus hub, make you as convenient as possible Support Card Type MS/Pro Duo, M2, SD/MMC, Micro SD Applicable models: computers with a USB interface in general Specification: USB 2.0 Plug and Play USB 2.0 x 3 Support MS/Pro Duo, M2, SD/MMC, Micro SD