This is a two-unit set of the TP-Link mesh Wi-Fi system "Deco XE75". I am selling it because I am upgrading. I purchased it new and used it for about two years. It was working properly, but there is overall yellowing due to UV exposure. I am in a non-smoking, pet-free environment. The outer box, instruction manual, and other accessories are all included. Please understand that this is a used item before purchasing.