Microsoft has finally started testing the feature that could make its new Edge browser a real alternative to the likes of Chrome and Firefox: extensions. An updated browser with support for extensions is part of the new build rolling out to Preview users in the Fast ring. There are updates for both PCs and Mobile, although extensions are a desktop-only feature and there are only three of them available right now: Translate, Mouse Gestures and the Reddit Enhancement Suite. Versions of popular extensions from the likes of AdBlock Plus, LastPass, Amazon and more are promised to arrive later this year. The video below explains how the installation process works, so you can watch that while your computer updates.