Company         Products              EL II     EL Plus    EL 16
                                       3C503     3C505      3C507
                                       Family               3C507-TP

  3Com            3+                     Yes       Yes       Yes
  3Com            3+Open                 Yes       Yes       Yes
  3Com            LAN Manager v2.0       Yes       Yes       Yes
  3Com            NBP (NetBIOS)          Yes       Yes       Yes
  3Com            OSI/ES with DPA        Yes       Yes       Yes
  3Com            NFS with DPA           Yes       Yes       Yes
  3Com            TCP with DPA           Yes       Yes       Yes
  3Com            NetProbe               Yes       Yes
  3Com            EtherStart PROM        Yes                 Yes
  3Com            NetWare Boot PROM      Yes       Yes       Yes
  Apple           AppleShare             Yes
  Artisoft        Lantastic              Yes       Yes
  AT&T            LAN Manager            Yes       Yes       Yes
  Banyan          VINES                  Yes       Yes       Q4 '91
  Brightwork      NetRemote              Yes
  Century Softwar Tiny Term              Yes       Yes       Yes
  Clarkson Univ   Packet Driver          Yes       Yes       Yes
  Datability      RAF                    Yes       Yes
  DCA/Tiara       10Net                  Yes       Yes       Yes
  DEC             Pathworks for DOS      Yes       Yes       Yes
  DEC             Pathworks for OS/2     Yes       Yes       Yes
  Digital Area Ne MAX Link               Yes
  DSC             Nexos                  Yes
  Essex Systems   TCP/2 for DOS          Yes       Yes       Yes
  Essex Systems   TCP/2 for OS/2         Yes       Yes       Yes
  Farallon        PhoneNet Talk          Yes       Yes
  FTP Software    PC/TCP                 Yes       Yes       Yes
  Hayes           LANstep                                    Yes
  IBM             OS/2 LAN Server        Yes
  Interactive     386/ix SVR3            Yes
  Interactive     386/ix SVR4            Yes                 Q1 '92
  InterCon        TCP/Connect            Yes
  Lanport         PCbridge                                   Yes
  Lanport         PCroute                                    Yes
  Lanworks        BootWare-NW            Yes       Yes       Yes
  Lanworks        BootWare-LM            Yes                 Yes
  Locus           PC Interface           Yes
  Locus           PC Xsight              Yes
  MicroPort       Unix System VR4        Yes                 Q4 '91
  Microsoft       LAN Manager            Yes       Yes       Yes
  Network General Sniffer                          Yes
  Network Researc Fusion                 Yes       Yes
  Novell          LAN WorkPlace          Yes       Yes       Q1 '92
  Novell          NetWare Lite v1.0      Yes       Yes       Yes(IPX)
  Novell          NetWare 286 v2.x       Yes       Yes       Yes
  Novell          NetWare 386 v3.x       Yes       Yes       Yes
  Olivetti        Olinet                 Yes       Yes
  Olivetti        Olinet LAN Manager     Yes       Yes
  Opus            Personal Mainframe     Yes
  Pacer           PacerLink              Yes       Yes       Yes
  Polygon         poly-COM               Yes       Yes       Yes
  Polygon         poly-LINK              Yes       Yes       Yes
  Polygon         poly-STAR              Yes       Yes       Yes
  Polygon         poly-NET               Yes       Yes       Yes
  Santa Cruz Ops  TCP/IP for Xenix       Yes
  Santa Cruz Ops  TCP/IP for Unix        Yes                 Q4 '91
  Santa Cruz Ops  LAN Mgr for Unix       Yes
  Santa Cruz Ops  NFS                    Yes
  Santa Cruz Ops  Open Desktop           Yes                 Q4 '91
  Santa Cruz Ops  OSI                    Yes
  Sun Microsystem PC-NFS                 Yes       Yes       Yes
  Sitka (Sun)     TOPS                   Yes                 Q4 '91
  Syntax          SMBserver              Yes       Yes
  Syntax          VDIM                   Yes       Yes
  Tech Concepts   Community                        Yes
  Touch Comm.     OSI                    Yes       Yes       Yes
  Univ of Ilinois NCSA Telnet            Yes
  Univ of Ilinois PCbridge                                   Yes
  Univ of Ilinois PCroute                                    Yes
  WEBCorp         WEB                    Yes       Yes       Yes
  WRQ             Reflections            Yes       Yes       Yes
  Wollongong      PathWay Access         Yes       Yes       Yes
  XIOS Systems    Office Solutions       Yes       Yes