Features:Designed with transparent shell which means you can conveniently and readily know the inner details of the hub.Comes with 4 USB ports convenient to connect with various devices at the same time such as phone fan hard drive etc convenient to use.High speed transmission up to 5Gbps which can help you finish your job at a fast speed.Adopted VL817 chips which is more stable ans more safe files transmission.When it connect with the computer the blue light on the buttom will autimatically be turned on.Small size easy to carry with and would not occupy much space of your tiny desktop.Specifications:Size:19*80*35mmInput port: Micro-USBOutput pirt: UBS3.0 Type-ATransmission rate:USB3.0 5Gbps(theory value)includes: 1 x usb hub"