For computers to work its basically hardware and software, however you need to have the correct versions / types.
Picked up an i7 Dell Laptop in Singapore last year, looked the part, worked okay in the hotel over WiFi. Get home try and plug the Laptop into the LAN, no socket. Been using Dell's Notebooks and Laptops since 1989 and all have had LAN ports. Solution was to get a USB to RJ45 adapter, popped over to TukCom, get home doesn't work. Laptop is Windows 11, adapter only rated to Windows 10 (my fault didn't check the specs).
Getting IT to work is never simple, and I've been doing it for 45 years!
On the subject of DataComs and throughput, couple of rules of thumb.
1) LAN cabled overheads are approx 5%, so if you have a 1GHz link, you'll get 950 MHz.
2) WiFi has many variables, environment, i.e. walls, furniture, electrical interference (microwaves, mobile phones, lighting, radio etc) plus the reflective properties of all the various materials / objects. Unlike LAN, WiFi isn't Full Duplex (separate channels for Transmit and Recieve), plus there is shared traffic, mobiles, other tablets/ laptops, IoT stuff etc as well to consider.
In summary expect 35 to 50% overhead.
So with a 2.4 GHz WiFi connection that gives you a typical 400MHz connection speed, then expect 200 MHz or above performance.