Newegg offers the Microsoft Xbox One Wireless Adapter for Windows, model no. HK9-00001, for $24.99. Coupon code "EMCEGFM37" cuts that to $19.99. With $2.99 for shipping, that's $2 under our October mention and the lowest total price we could find by $2. It allows you to use your Xbox One wireless controllers on Windows 10 PCs and tablets. Deal ends February 24.