?The green light only indicates that you have 5V from the USB hub to the uc100. The LED on the other side is a blue LED that is on when the UC100 is initiated and starts up from Mach 3. If you don't see the other led turn on blue than you might have a setup problem.? In mach3 click on CONFIG, then on Config Plugins aand then click on check for new plugin version. If you have everything connected properly it should show and update. If not then the firewall may be preventing the UCC plugin to function. Last go to c:\mach3\plugins and make sure that the uc100.dll is there.
Dan Mauch
