Tripp Lite's U225-004-R 4-port USB 2.0 Hub allows you to attach multiple USB devices to a single USB port on your computer. The hub supports all three data transfer speeds: low speed (1.5 Mbps) full speed (12 Mbps) and Hi-Speed (480 Mbps). Includes 1.22 m (4-ft.) USB 2.0 Computer to Hub cable (A-B).<br /><br />- Supports Hi-Speed data transfer rates up to 480 Mbps<br />- Meets or Exceeds USB 2.0 Specifications<br />- Supports USB 2.0 spec up to 500mA per port<br />- USB 2.0 and 1.1 compliant <br />- Compact desktop design ( 4W x 2.5D x .625H ) <br />- Does not require external power software or complicated set-up procedures<br />- Supports USB 2.0 spec up to 500mA per port <br />- On bus-power 500mA from the USB 2.0 computer port is shared between the hub ports <br />- Plug & Play and Hot Swap capability <br />- Compatible with Windows Mac and Linux