Not recognizing 2nd monitor

I have foillowed the other forum suggestions – removed DisplayLink applications, used the cleaning tool, reinstalled. Still laptop does not recognize HDMI or DVI connection. I have the zip file to send, but do not have a ticket number.

I noticed Device Manager reports for UD 3900:

Device USB\VID_17E9&PID_4323&MI_00\7&203bebea&1&0000 requires further installation.

On that note, I did not see any further installation happen after connecting the UD 3900 as the instructions suggested would happen.

Hi Dennis,

Thanks for posting!

I’m certainly glad to investigate further into this strange behavior. Please go ahead and send the PlugDebug ZIP file to us directly at with the subject line: “Ticket #262391

For any potential future inquiries (or any user reading this post), you do not need a ticket number to contact us – please simply email and a ticket will be created for you.

Thanks for giving us a chance to help!


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