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3. The external monitor flashes/flickers.
Check if the computer is on power-saving mode. If yes, turn it off or
switch the computer to high-performance mode.
Connect the monitor to another computer to see if it flickers, if yes,
the monitor is probably defective.
When connected to 2 or 3 monitors simultaneously, the screen may
flash to indicate the product has reached its max resolution, and cannot
support the bandwidth of multiple monitors. Please try to lower down
the resolution on the connected monitors.
4. Ethernet connected but no Internet connection.
Check if a connection is detected by observing the LED indicator light
on the Ethernet port on the docking station and your router. (For the
docking station, the green LED on while the yellow LED flashes indicates
it's connected properly and the internet singal is detected. And usually
the same for most routers.)
Check the Ethernet cable.
Try restart your modem and router.
