... be used in the following Operating System: Windows98, Windows ME, Windows NT, Windows 2000 Windows XP,VIST,WIN7,Linux. 1. 56k Data/Fax ... 27ter Group3 f ax protocols4. Up to 54K data download,48K data upload and 14.4K fax communication5. ... ConferencingV.80/H324 interface supportNet.Weight15gOperating System:Windows98, Windows ME, Windows NT, Windows 2000 Windows XP,VIST,WIN7 and Linux 56k Data/Fax ...