Allows you to connect up to four USB devices to a single USB port on a PC/Mac/laptop. Meets or Exceeds USB 2.0 specifications for hi-speed data transmission rates up to 480Mbps. Perfect for both the desktop and mobile user. For the mobile user, this full featured hub with built-in cable is pocket size and an ideal solution for the user on the go. All four ports support USB Battery Charging ( BC ) specification v1.2, providing up to 1.5A for fast charging of mobile devices. Includes a 100-240V, 5V, 2A power adapter. This USB 2.0 device is backwards compatible so that it will function with both USB 2.0 devices as well as USB 1.1 peripherals. Number of Ports: 4; For Use With: Multiple USB Devices To 1 Computer; Transfer Rate: 480 Mbps; Width: 1.5".