asy Installation with Plug-and Play convenieence.Turns a single USB pot into 7 USB 2.0 ports.Transfers your data at up to 480Mbps.Fully compliant with USB 2.0.Backwards compatible with USB 1.1 .Independently switchable ports.Supports hot swapping for all USB devices.Lowers power consumption for longer battery life.Individual port over-current protection.Makes power supply optional in laptop applications.Offers lightweight, compact design-perfect for travel.BLUETOOTH ADUPTOR INBUILT MICSystem requirements :Mac : Mac OS Xv10.3 and higherPC : Widows 98,2000, Me, XP, Vista, Win7