No OS noted, machine, connection and more.

I can only guess you need to report you are not reading "Tip: If you are asking for help to troubleshoot a computer-related problem, please be sure to include all the necessary information (ie: operating system, model number, hardware, software, etc) that will help others identify your problem for a speedy resolution." when you make a post.

In a nutshell for most PCs with USB, you would go to http://www.epson.com/ , click you country and then maybe http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&oid=14082&prodoid=24875245&infoType=Downloads&platform=Windows and the driver there. You would normally run that BEFORE plugging in the USB cord.

But I'm just guessing since you may have an Apple.

bob