Specifications:USB 2.0 hub is designed especially for the computer desktop laptop expands a USB 2.0 port in three easily.Also combined with a slot for SD and TF cards, which makes reading different types of memory cards very convenient.Transmission speed of the USB 2.0 interface is up to 480Mbps.Plug and play, powered by USB (no external power or battery needed).Compatible with: For Windows XP/2000/Vista/Wins 7/8/10, for Mac OS, etc.Item Name: USB SD/TF Card Reader Hub AdapterUSB Ports: 3 PortsCard Reader: For SD/TF Card (Micro SD)Material: ABSPower: 5V/500mAFeatures: Portable, Durable, Easy to UseCable Length: 0.1m/3.94" (Approx.)Size: 85mm x 22mm x 21mm/3.35" x 0.87" x 0.83" (Approx.)Notes:SD and TF card cannot be read simultaneously, it can only read one card once.For a stable connection, the devices connected to the hub must not exceed a combined current of 5V/500mAh.This hub is not a designed to serve as a charger, and will not meet the charge requirements for mobile phone, for iPad tablet and other devices.Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x USB SD/TF Card Reader Hub Adapter