- This Dell mouse is pretty much fit and forget - just put the 2.4 Ghz wireless dongle in a USB port and you're away- For devices without a free USB port, simply use Bluetooth instead- Microsoft Swift Pair means it can connect to PCs over Bluetooth almost instantly- To up your productivity, you can program 5 buttons - 2 on the side, and 3 on the scroll wheel- It comes with a replaceable AA battery that'll last you up to 3 years with no need to change or recharge- The optical sensor will work perfectly on most desks and you can tweak the DPI to slow it up or down