You can choose the length of 60 cm or 120 cm 1. ?4 USB 3.0 ports? The 4 port USB 3.0 hub supports USB 3.0 transJK-FEr rates of up to 5 Gbps to enable fast transJK-FEr between devices. Ideal for high throughput devices such as USB hard drives, flash drives and USB video moving adapters. USB 2.0 with up to 480 Mbit / s. It allows you to transJK-FEr an HD movie in a JK-FEw seconds 2. ?Very long flow? Each USB 3.0 interface can supply 900 mA of current. 5V1A, 5V2A power supply with 3.5 interface can be connected to increase the current and ensure that the devices with high power consumption can work at the same time. 3. ?Single switch and LED display? 4 USB 3.0 data hub connections have separate switches and a blue LED display. Each USB port is controlled individually and does not influence each other. You can easily manage a large number of USB devices. 4. ?Compatibility? - Compatible with most Windows 10, 8.1, 8, 7, Vista, XP, Mac IOS X 10.2 and higher, Linux PC and laptop with USB. Compatible with USB 3.0 / USB 2.0 / USB 1. Fully plug-and-play and supports hot swapping. 5. ?Best material? The USB hub was made of good plastic with a rubber-oil housing and consists of a super strong and durable cable with a length of 1.2 m. The mother is very slim and easy to carry.