Having acquired a HD20, LocalTalk adapter, MIDI adapter and 800K external drive, I wish to complete my 512Ke setup with a modem. I understand the original 300/1200 Apple Modem was intended for use with the 128k so I will assume compatibility. However these are proving expensive and hard to find. I usually run System 5.0 on my 512Ke and wish to experiment with a modem and a terminal application. I get a kick out of vintage networking, and I already have a 3 device AppleTalk network built between my PM8600, Classic II, and 512Ke. What Apple modems are fully compatible with the 512Ke?