A practice which releases a mouse USB port when the computer has little (I have only 2). My computer running Vista was immediately recognized during installation. I use the Wifi simultaneously without any problem of interference between the two although it seems that the two systems are not always compatible. I have already changed several times of place (and therefore wifi routers modems) also without the worries. Batteries long resist despite heavy use, in short a good product for those who have the Bluetooth on their computer and do not want or strings attached, or use the USB port, all with inherent quality to Logitech.