Win 10 Pro CD-KEY (32/64 Bit) works only for Windows, not for Mac!
Win 10 Home, Win 7 Home Basic/Premium and Win 8.1 CoreCountrySpecific/CoreSingleLanguage/Chinese (incl. WMC) CAN'T be directly upgraded to Win 10 Pro by changing product key in Windows system. If You have these editions on you computer, you need to make a clean installation after purchasing Win 10 Pro.
More information about installation you can find in delivery email.
Please check the spam or junk mail folder too.
Win 10 Pro Key is designed to be compatible with the hardware, software, and peripherals you already own. And always-enabled updates help you stay current on features and security for the supported lifetime of your device.
If you buy Win 10 Pro key, it will give you absolutely the best experience for doing what you do. Stay focused with easy ways to snap apps in place and optimize your screen space for getting things done. See your open tasks in a single view and create virtual desktops to gain space or group things by project, like Office apps for work and games for play.
Gaming just got even better if you buy Win 10 Pro. Not only do your existing games work great, but now you can play and connect with gamers across Xbox One and Win 10 devices. From the best casual games to a new generation of PC gaming, Win 10 is built for games you love.
Cortana is your truly personal digital assistant who works across all your Windows 10 devices to help you get things done. By learning more about you over time, Cortana becomes more useful every day, staying transparent and keeping your trust.