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About the UD-3900H category
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1
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870
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August 11, 2020
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HDMI monitor connected to UD3900H will not restart after computer wakes from sleep
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2
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160
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January 20, 2022
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USB 2.0 Ports stopped working
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2
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282
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September 1, 2021
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Using laptop with 2 monitors
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2
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316
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August 4, 2021
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VGA Monitor Not Working
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1
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341
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February 4, 2021
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2 sceens and a laptop
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1
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369
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February 1, 2021
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DisplayLink video driver will not install
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5
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749
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January 12, 2021
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HDMI to connect to Monitor not detected even follow the instruction posted
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3
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574
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November 2, 2020
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Ethernet Port and HDMI Port No Longer Recognized
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5
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497
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August 14, 2020
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ON and OFF switch using surge protector
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3
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515
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May 27, 2020
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Annoying Beeping on Startup
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3
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526
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May 13, 2020
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USB Switch with Dual Monitors desktop and laptop
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4
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780
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April 28, 2020
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Ethernet constantly disconnects
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6
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1703
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March 9, 2020
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USB’s not workimg
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|
2
|
799
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December 22, 2019
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Not recognizing dual monitors or ethernet with USB 3.0
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1
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904
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July 14, 2019
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Displaylink not working on Macbook pro mid 2012 model after updating to Mojave 10.14
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5
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2091
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November 5, 2018
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Intermittent screen "disconnection"
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4
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1045
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October 24, 2018
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