MODEM DIAMOND SUPRA EXT 56K V.92 The SupraExpress 56 was designed with components that deliver award-winning 56K performance over a wide variety of line conditions. This powerful modem features the 56K ITU standard (V.90) along with K56flex for widespread ISP support. This integrated Internet, voicemail and fax solution includes a valuable CD full of top-rated communication software. Diamond's own SupraVoicemail software will handle all of your incoming faxes and voice calls. Best of all, the SupraExpress was designed specifically for the Macintosh.