a cheap modem where some of the functions is done by software ( designed to work in windows )

a combination of hardware known as chipset (much less than in a true pure hardware modem) and software (written for the infamous Windows operating systems family)

a cut down dummy modem that does not have a hardware controller this means that the actual "modem" part is done in software ( windows driver ) whereas a "full" modem has all the functions built into the chips on the card

a minimalistic modem where much of the hardware has been replaced by specialised software

a modem stripped of much of its normal hardware, and which as a result depends on special emulation software in the Microsoft Windows operating system

a modem which uses the CPU for processing it's data

an HSP modem made by USR

an internal chip kinda thing that functions as a modem and you probably won't have much luck getting it to work under Linux

a software modem designed to work with the Microsoft Windows operating system