Our 4-port USB hub expands your USB configuration and provides an extra port for connecting peripherals. This hub is fully USB 1.1 compliant to ensure compatibility with all of today's hottest USB peripherals - regardless of computer manufacturer or operating system. All hubs are self or bus powered and include one cable to connect the hub to the CPU. U205-004-R and U202-004-R include an adapter for use with power-hungry devices or for daisy-chaining additional hubs to connect additional devices. Hubs can be chained together for added expansion. Comes in retail packaging. Tripp Lite offers a lifetime replacement warranty on all cable products.