Hello Kevin,
Never owned or operated a Supra, but at www.diamond.com you'll find
info & support and just about anything you want re: Supra.
Here's the Express K56Flex propaganda.
> Can someone give me details on these modems?  It seems that Diamond
> has discontinued all other models of Supra modems(except the 33.6
> SupraExpress, of course.)  Do these modems have NVRAM?  Are they
> 'WinModems'?  Can I use one to its fullest ability under DOS or OS/2
> or Linux?
Diamond Multimedia:
SupraExpress 56 PC Series (56Flex)
Explore your favorite Web sites faster than ever with the SupraExpress 56!
Take advantage of this revolutionary breakthrough in speed. The SupraExpress
56 delivers all the reliability and quality you've come to expect from
award-winning, Supra-branded products. Get the highest data speeds over
ordinary telephone lines. The SupraExpress 56 series was built from the
ground up to deliver 56K speed. Instead of rebuilding a 33.6K modem, Diamond
designed new components specifically for 56K.
          * Works over ordinary phone lines
          * Dramatically reduces access time and fees
          * Transfers large graphics and multimedia from the Internet in a
            fraction of the time
          * Hardware based compression
          * Supports ITU V.34
          * V.80 Video Phone Support
          * Software upgradeable memory
    Data Details
    * Speeds: 56,000 / 54,000 / 52,000 / 50,000 / 48,000 / 46,000 /
      44,000 / 42,000 / 40,000 / 38,000 / 36,000 / 34,000 / 33,600 /
      32,000 / 31,200 / 28,800 / 26,400 /24,000 / 21,600 / 19,200 /
      16,800 / 14,400 / 12,000 / 9600 / 7200 / 4800 / 2400 / 1200 / 300bps
      * Protocols: Rockwell K56 / ITU-TSS V.34 / ITU-TSS V.32bis V.32 /
        V.23 / V.22bis / V.22 Bell 103 / 212A and V.21
      * Error Correction and Data Compression: ITU-TSS V.42bis and MNP 2-5
      * Auto answer / auto dial
      * Industry-standard and extended AT Command set
      * V.80 synchronous access mode
      * Improved download speeds available when connecting to compatible
        56Kbps server
      Fax Details
      * Speeds: 14,400 / 12,000 / 9600 / 7200 / 4800 / 2400 bps
      * Protocols: ITU-TSS V.17, V.21, V.27ter, V.29
      * Compatible with Class 1 fax software. Works with Group 3 fax
        machines
      System Requirements
      An IBM-compatible computer (386 or higher, AT bus, ISA) and one of the
      following: MS DOS 5.0 (or higher), Microsoft Windows (3.1, 3.11),
      Windows 95 and Windows NT.
      Also supports OS/2 and UNIX
      Configuration
      Product                     Bus
      Description                 Type     Price*  Qty.Order Online
      SupraExpress 56e Package    (PC)             external 139.95
      SupraExpress 56i Package    (PC)             ISA      119.95
      * Products and prices subject to change without notice
      Though this modem is capable of 56kbps download performance, line
      impairments, public telephone infrastructure and other external
      technological factors currently prevent maximum 56kbps connections.
And not WinModem in the lot.
Later...
 Rick
  rgraham@ionet.net
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