While in putty, can you go ahead and issue an @48 and hit enter
Then with @48 enabled, go ahead and hit some keypresses
Please take that output as well as the output from your ad2usb configuration and email it in a file to
ad2usb@support.nutech.comThen enter @00 and hit enter to exit this mode
This will help us debug why you can't send keypresses
Not an employee of the company. Just here to help and keep things clean.