Please make sure that the item listed is the item you are looking for. And can only be activated on ONE machine. These keys are on a label that can be affixed to whatever machine it gets Activated on. Windows 8 Professional / Windows 10 Product Key Genuine Sealed Dell 32/64 Bit A BRAND NEW UN-OPENED - Sealed Dell Windows 8 / 10 PRO Product Key For Windows 8 / 10 PRO 32/64-BIT.