Description: Plug it into your computers usb port and receive 4 card readers and 3 usb 2.0 ports high speed 3xUSB 2.0 ports and 4 card slots (SD/TF/MS/M2), also compatible with USB1.0/1.1/2.0 Easy to set up, Plug & Play, Hot swappable. Compatible with: Win95/98/Me/2000/XP, Linux2.4, Mac OS8.5 and up. Usb hub mixed with card reader means you can read/write on 4 different card types as you use 3 usb ports at the same time Safety Feature: over-current protection safeguards when it is connected over voltage LED light indicat Specification: Number of USB port: 3 x USB2.0 Memory Card Slot: SD /TF/MS/M2 Card Powered By USB (Not support multi mobile phone charging) Size: 8X8X4CM Package Includes: 1Piecex 7 Port Usb Hub 1PiecexUsb cable 1PiecexUser manual Note: Memory Card is not include