"NX2A4C.eds" is the EDS file to automate the configuration of AMCI Nexus Resolver Interface, the NX2A4C.  "NX2A4C_r01.ico" is the associated icon file for the EDS.  Instructions for using these file can be found in the AMCI NX2A4C Users Manual.  A copy of the PDF file is available on the disk shipped with the units or on our website, www.amci.com