Modems, cables and AppleTalk / LocalTalk items are now found in the Networking category. What will be found here are Apple II specific items, like interface cards.

In the early days, modems were 110 to 300 baud and grew to 56K. Serial cards on the Apple II’s max out at 9,600 or 19,200 baud, and the IIGS is officially at 19,200 as well. There have been reports of higher speeds obtainable on the IIGS.