Microsoft Windows 10 Professional OEM is a powerful operating system designed for business users and demanding individual customers. It offers all the features of the Home edition, plus advanced administration tools, security, and virtualization solutions. The system provides high performance, stability of operation and low hardware requirements. A refreshed Start menu, quick file search, preview of running applications and extensive management options increase the comfort of everyday work. The OEM key is designed for one-time activation on one computer (one motherboard). It supports both 32-bit and 64-bit versions of the system. The recommended activation method is the Automatic Telephone Activation System. Key features of the Professional edition: BitLocker – advanced encryption of data and external media Remote Desktop – the ability to remotely control a Hyper-V computer – creation and maintenance of virtual machines Windows Sandbox – secure test environment Mobile device management (MDM) Support for domains and business functions The Pro version supports up to 512 GB of RAM (64-bit), making it suitable for more demanding professional use. OEM key vs. retail version – differences An OEM key is assigned to the first computer on which it is activated and cannot be transferred to another device. The Retail version offers more flexibility to transfer licenses, but is usually more expensive. OEM versions are fully legal and designed to be installed on any compatible computer. Important information: The key can only be used once on one computer (one motherboard). The product does not allow you to change the system version from Home to Professional. Support for 32-bit and 64-bit versions. Ability to upgrade to Windows 11 (if your PC meets the minimum requirements). The Microsoft brand is used solely to identify the product and is protected by copyright.