New, sealed package (ad picture is stock) Bought two but only ended up needing one. It is driver free, meaning you just plug it in and it works. Works with all MS Windows systems (It works great in my Windows 10 system) Nice compact design Plugs into USB port Dual band: 5GHz and 2.4Ghz Internal omni-directional high gain long range antenna Supports 802.11ac wireless standard and all the previous variants. Supports latest wireless security protocols For MS Windows systems Device is 29x15x7mm