I purchased the UD-3900 after I saw a video of it connecting 4 monitors to a Dell Venue 8 Pro. The ethernet port works, my wireless mouse and keyboard work, external hard drives work fine. What doesn’t work is connecting it to a wide screen flat panel monitor, which is the main reason for my purchase. The display settings appear to see a second screen, but nothing displays on the monitor.
Thank you for contacting Plugable support! I’d be more than happy to assist you with this issue.
What kind of monitor do you have and what connection are you using to the back of the UD-3900?
We have a troubleshooting tool that helps us find out what is going on in situations like this. Please plug the UD-3900 with all of your accessories and monitor attached into your Venue through the OTG cable, then go to this page and follow the instructions there:
Please email the diagnostics zip file to firstname.lastname@example.org and mention ticket 54519 in the subject line.
Please don’t hesitate to let us know of other questions.
Thanks again for contacting Plugable support and best wishes!