The Samsung Book Cover Keyboard with AI Key is Samsung's full-featured keyboard cover for its mid-size Galaxy Tab range. It suits buyers who want their tablet to work like a PC when it matters. Samsung lists compatibility with the Galaxy Tab S10 Lite, Galaxy Tab S10 FE, Galaxy Tab S10 FE 5G, Galaxy Tab S9, Galaxy Tab S9 5G, Galaxy Tab S9 FE and Galaxy Tab S9 FE 5G. The tablet is sold separately. The keyboard uses full-size keycaps and a row of function keys, and it adds a trackpad for cursor control. Combined with Samsung DeX Mode, this turns the tablet into a PC-like workspace with a single tap. Multi-window work, spreadsheets and long-form writing become practical away from a desk. The cover is made sturdy but lightweight, and it attaches easily to the tablet. This generation also adds a dedicated AI Key. The magnetic design lets you detach and reattach the back cover. You can run the tablet slim for reading or pen work, then add the keyboard back for typing. The cover measures 6.8 x 10 x 0.6 in, compact enough for a standard bag or document case. For organisations deploying Galaxy Tab S9 FE or S10 FE tablets to sales, service and operations teams, the Book Cover Keyboard makes each tablet capable of real document work, and the cover protects the device between jobs. If weight matters more than a trackpad, the Book Cover Keyboard Slim (EF-DX720) is the lighter option for the same tablets.