My UD-ULTC4K is not detected when I restart my M1 Mac computer

Last Update: April 13th, 2021
Article ID: 825145

Some users have reported that after installing macOS 11.1, our UD-ULTC4K USB-C Triple 4K Display Docking Station may not be correctly detected by Apple’s M1 based computers on restart or when powered on after being turned off. This affects the UD-ULTC4K docking station and connected USB 2.0 and 3.0 devices, including the two DisplayPort outputs controlled by the DisplayLink USB Graphics chipset, the HDMI 4K output and connected display will most likely be functional after reboot.


Until Apple issues an update that resolves this detection issue we recommend unplugging the docking station from the computer, then reconnecting it after macOS has completed loading. We are hopeful this will be resolved by an update to macOS but do not have a timeline for such a resolution.