StarTech.com Multiport USB 2.0 Hubs - StarTech.com ST4202USBGB, This 4 Port USB 2.0 Hub from StarTech.com connects to one USB 2.0 port on a Mac or PC computer, adding four USB 2.0 ports - so allowing you to maximise the number of high speed USB peripherals connected to your computer.The hub supports cascaded installation with other USB 2.0 hubs, supporting up to 127 USB 2.0 device connections - a scalable solution for connecting multiple USB devices to a single host computer. This hub includes a power adaptor, but can be powered through USB bus connection to the host computer - allowing you to install the hub as needed without worrying about the availability of a power outlet.The USB 2.0 hub offers an attractive black casing that suits any operating environment and includes a 3ft USB 2.0 A/B male-male cable, for the connection between the hub and the host computer. StarTech.com ST4202USBGB 4 Port Black USB 2.0 Hub