I use the DockingStation with 3 screens. Connecting a screen with HDMI changes the resolution and display of various programmes. If I unplug this screen before starting the notebook, start everything up and then plug it in again, the resolutions and displays suddenly match again. Does anyone here have an explanation?

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The dock uses the USB Alt mode (basically DisplayPort via USB) with 3 screens with HD resolution or higher, the USB bandwidth is no longer sufficient for USB 3 and the controller must be "reduced" to USB 2. This only works with a restart. On some HP notebooks, you can activate a mode in the BIOS that reduces the USB speed to USB 2.0 in USB Alt mode. https://support.hp.com/us-en/document/c06575423

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