What you will get: • Windows 8.1 Pro, ensure Windows 8.1 is already installed on your device. • 25-digit license key. • Permanent/Lifetime, Retail Digital License. • Requires at least Windows 8.1 Pro. • Online activation via the activation menu. • Bulk purchase? Special discounts available. • We only sell licenses. Ensure you can install Windows yourself using a genuine ISO, not a modified one. ISO will be provided if needed. • For Windows 8.1 Pro only. For Home and Single Language versions, we will provide a tutorial link to convert to Pro. For N and KN versions, reinstall or upgrade to Pro first. • License error? Contact us immediately with a photo of the activation error—100% replacement if unusable (valid only within 12 hours of purchase, no warranty after). • 1 license for 1 device. For reinstallation, clear the license during setup as it is tied to your PC/laptop. The license will auto-activate when online. Warranty void if reusing the same license (detected as dual device). • Delivery via chat takes 10–30 minutes—please be patient. • Buyers must respond quickly in chat or stay standby on Itemku for further info.