Microsoft Office 2019 Home and Business for Mac - this license is valid for 1 device - Microsoft account required for redeeming the Product Key - if you don't have one, you can register one for free - this is a valid, genuine license, which will allow you to link the license with your account, and to download the software from the Manufacturer's website. - this version works with Mac only. - system requirements are available at aka.ms/systemrequirements.