Troubleshooting - Dell Precision 3580 Connection Manual

Troubleshooting

The display output resolution cannot reach 4K@60 Hz while connecting
the display monitor with a HDMI-to-DP or DP-to-HDMI dongle from the
docking station to the system
Question
When I connect a display monitor to the computer using an HDMI-to-DP or DP-to-HDMI dongle from a Dell WD19/WD22
Thunderbolt docking station, the display output resolution cannot reach 4K@60 Hz (only 4K@30 Hz).
Cause
This is due to a hardware limitation while connecting dongles to the Dell WD19/WD22 (Limited Graphic bandwidth) Thunderbolt
docking station.
Workaround
Connect the monitor directly to the HDMI or DP ports on the Thunderbolt docking station.
Connect external displays 11