Expansion Ports: One USB port on your computer allows you to connect up to 4 ports; Compatible with Windows, Mac OS and Linux, etc Transparent Hub: The rectangle hub design allows you to see the internal structure well, and the large area of blue LED lamps provide a brand new experience to use. Powered USB Hub: With 5V/2A extra power supply port, you can get more stable in using when connecting high power consumption devices like HDD SSD, etc. (Note: It is recommended to use the backup power port when connecting a high power consumption device. Power cable do not include in the package). Expand 4 USB 3.0 ports for your laptop or desktop through a standard USB port to connect the U disk, flash drive, USB mouse, USB keyboard and etc. NOTE: The hub need to be connect extra power supply port when you connect high power consumption device or too many devices on it. Package: 1 x 4-Port USB 3.0 Hub, 1 x 3.0 USB + Type C Cable (2 in 1), 12 Month Warranty