1.The Top Loading Port Allows You To And Quickly Temporarily Connect Gadgets Such As Usb Thumb Drives, Media , Usb Lights, And Fans. Connect Modems, Usb Printers, Scanners, And Hd To A Convenient Usb Hub. 2.This Usb 2.0 Hub Adds Four Usb 2.0 Ports To Your Device. 2 Usb Peripherals Connect To Your Computer And Save Desk Space, This Dual-Port Hub Is Backward Compatible With Usb 1.1/1.0 Devices And Is Compatible With /8/8.1/7/Vista/Xp And , Linux And Chrome Os. 3.2-Port Support Layered Installation With Other Usb 2.0 , Multiple Usb 2.0 Device Connections - A Scalable Solution For Connecting Multiple Usb Devices. 4.A , Portable Hub To This Lightweight Gadget Into Your Bag Or Pocket, Go On Business Trips With Your Laptop And Laptop, Or Expand Your Desktop With More Available Usb Peripherals. 5.Plug And Play, No Installation Required. Description: 1.Transfer Rate: Usb2.0 2.Whether External Power Supply Is Connected: No External Power Supply 3.Number Of Interfaces: Data + Charging 4.Usb2.0 Transmission To 480mbps 5.The Interface Is Usb/Otg Integrated Design 6.2-Port Usb 2.0 7.Backward Compatible With Usb 2.0/1.1/1.0 Standards 8.Support /Win 7/ Os/Linux And Other Operating 9.Blue Led Status Indicator 10.It Can Drive The Mobile Multi-Function Holder/ Enclosure Produced By Factory 11.It Has Safety Protection Such As Overvoltage/Overcurrent/Short Circuit 12.Usb 2.0 2-Port Usb 2.0 Hub Colour:A:black Material:ABS Size:4 x 4 x 1cm Package Contents: 1 x Hub Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.