The 4-port USB 3.0 hub simply helps you connect up to 4 USB devices to your PC or laptop, such as external hard drives, USB flash drives, mouse, keyboard, USB headphones, speakers etc. Individual switch with blue LED indicates power status of each port Product parameter Transmission speed: 5 Gbps Compatible: USB 3.0, 2.0 and 1.0 Support system: Windows 10, 8, 7, Vista, XP Max OSx 10.6-10.12 or later Linux 2.6.14 or later Volume: 11.6 * 2.4 * 5.4cm, NOTE: 2.4Ghz wireless devices (such as wireless keyboard and mouse adapters) may not work on USB 3.0 hubs. It is recommended to connect it to a USB 2.0 port. Avoid connecting high-power devices at the same time