Yes, Ethernet, not Wifi, which would have been understandable.
Back in the day there was ‘software NICs’ on the market which required separate (driver-ish) software to do anything. Also there was RTL chips which required propietary parts from a driver and all the fun stuff. On wifi it’s still a thing now and then, but everything works far better today, and it’s at least partially because hardware is better too. Of course even in late 90’s when ethernet started to gain traction you could just throw something like 3c509 or e100 to your box and call it a day, but standards were far less mature than they’re today.