?Extension 4 Ports USB 3.0 Hub?Expand one USB port to four. Reverse Compatible USB 2.0 / USB 1.0. | ?High Data transfer USB 3.0 Hub?Support Transfer Speed up to 5Gbps (USB 3.0), USB 2.0 up to 480Mbps. let you transfer an HD movie in few seconds. | ?Individual On/Off Switches?Atolla 4 ports Mini USB 3.0 hub has individual power switches for each port, being able to turn On/Off the USB port without unplugging the equipment,and you can understand the working Status for each port by those LED Indicators. | ?Mini Super Small USB 3.0 Hub?This compact USB hub is small enough for work and travel. Size:10.5cm*4.5cm*1.5cm(4.13in*1.77in*0.59in), weight:44g(1.55oz). | ?Portable 4 Ports USB 3.0 HUB?Plug & Play, no Installation; and Hot Swappable. What you get: 1*atolla mini USB 3.0 Hub, 1*User Manual, 18 month warranty.