This article explains how DOS systems are no longer supported and provides information to legacy guides and drivers

Microsoft and Elo ended DOS support many years ago. When DOS was supported there were drivers written for the touch controllers that were being used in Elo products at that time. Those controllers are now obsolete and current Elo products are equipped with new controllers which were not in existence in the DOS era; therefore, none of our current products have DOS support.

You can find some very old DOS information in the below Knowledge Articles:

• Elo DOS Touch Driver 
• Where can I find the Legacy MS-DOS Help Guide?
• Where can I find details for MS-DOS Driver Diagnostics and Troubleshooting?