For the keyboard, I recommend the Samsung Book Cover Keyboard available for CHF 154. For the mouse, you can choose any model and then connect it to your tablet with an OTG adapter (USB A to USB C). Personally, I use a wireless mouse, and I plug the USB A stick and adapter into the tablet. Works flawlessly, especially in Samsung Dex mode.
Thanks for the info! By the way, you can report incorrect specifications directly on the product page.
Product page -> Specifications -> ↓ Show more -> Scroll down -> Report incorrect data -> And then change the corresponding entry or enter a "general error report".