By default, all software supports multiple file extensions. Procomm Plus supports at least 3 different file extensions. The basic files that Procomm Plus supports are .USR. However, not all of the extensions listed on the list are always used to save the effects of work in Procomm Plus. Very often, files with such extensions are used as source data files used by Procomm Plus.
Procomm Plus can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via Procomm Plus and try to save it in another file format, also supported by Procomm Plus.