Hi, I have a Plugable UD-3900 for almost 2 years and in these last 3 months have experienced some problems. I have 2 monitors attached to my laptop one connected to the HDMI port on the laptop and the second monitor connected to the station. The monitor connected to the station takes at least about 7 or 8 minutes to receive signal and be active presenting graphics in those minutes appears as if the monitor is not connected, past these 7 or 8 minutes the monitor is activated and displayed the graphics normally.
Anyway, today I had to reinstall the drivers DisplayGraphics because none of the 3 monitors have signal, neither the laptop nor the external monitor 1 or monitor 2. Disconnecting external usb station, the signal back at least to the laptop and monitor connected to the HDMI port on the laptop (monitor 1), reconnected the station, the signal of the 3 monitors left. Reinstalling the drivers, I returned to the behavior described in the first paragraph.