The item is compatible with windows 10/8.1/8/7/XP. However, on the box there is limited space so the manufacturer do not list all of the versions and just list the most recent versions of windows. Wifi Dongle– applies the latest Wireless and it is backward compatible with Wifi V3.0/2.1/2.0/1.1. Tp Link Wifi Dongle turns non-Wifi PC or laptop into Wifi-capable ( PS4 & XBox Controllers for PC Only ). Plug & play or free driver – plug and play for Win 8, 8.1, 10, and 11. Supports Win7, XP (driver required for Win7, XP and could be downloaded from website free of charge). it is not compatible with mac Linux, TV. Nano-sized – a sleek, ultra-small design means you can insert the Nano adapter into any USB port and simply keep it there, no matter when you are traveling or at home