Fitian USB Extender 4 in 1 Hub with Memory Card Reader Sd Micro Sd 2 USB 2.0 Ports Charger Adapter for Microsoft Surface 2 Pro2 Pro3 Tablet (Pro 3 Micro Usb Hub) Compatible with Surface 2/Pro2/pro3 tablets. A good idea to turn one port into two. Easy way to convert your Surface Pro to have a card reader. Four slots offering enough functionality. 1 SD card input, 1 Micro SD card input, and 2 USB inputs. No interfere with any charging ports or connections. Can be used while charging. Don`t have to remove a mouse to insert another USB device. Plugs in and keep the only one USB port on the tablet free for your camera , printer or other devices.