The Encore ENU-4USB 4-Port USB Hub is a compact 4-port USB 2.0 hub for all your connectivity needs. It transfers data at a rate up to 480 Mbps (40X faster than USB 1.1 standard). With its hot-swapping feature, you can attach or remove USB devices without turning off your computer. Digital cameras, printers, MP3 players, external hard drives and other peripherals are a breeze to add. Connect up to 4 USB peripherals to your PC with the Encore ENU-4USB. Up to 127 devices may be added by cascading additional USB hubs. Keep your desktop clear of bulky cables and experience hassle-free installation with Plug-and-Play. Expand your computer’s capabilities with the Encore ENU-4USB USB Hub. Type: USB Standards: USB 2.0/1.1 Max Devices Supported: 127 Ports: 4 x USB 2.0 Transfer Rate: 1.5/12/480Mbps Power Input: No external Power Required Dimensions: 38 x 90 x 12 mm Features: Expands a single USB 2.0 port to 4 USB 2.0 ports Sleek, compact design. Cable tucks away when not in use. Transmits data up to 480Mbps for lightning fast results Backward compatible with previous USB standards Quick Plug-and-Play installation Hot-Swappable -- no need to turn off computer when adding/removing devices Supports USB devices, such as cameras, printers, scanners, hard drives and MP3 players