* [[Commstar v21/23 modem]] ([[PACE]])
* [[Digitelec DTL 2000/2100 Modem]]
* [[KDS Communicator 104]] (connects directly to expansion port) ([[KDS Electronics]])
* [[Mini-Max Modem|KDS Mini-Max Modem]] (connects via RS232 interface) ([[KDS Electronics]])
* [[MicroLink Dual-Speed Modem]] ([[MicroLink]])
* [[MicroLink Multi-Speed Modem]] ([[MicroLink]])
* [[Mini-Max Modem]] ([[KDS Electronics]])
* Prestel Link (acoustic coupler bundled with [[Cirkit serial interface]]) ([[Cirkit]])
* [[Schneider BTX Modul]] (for german Bildschirmtext) ([[Schneider]])