Many Dell monitors have Ethernet ports so that a laptop can connect to it and use a wired network connection. The monitor may then replace a laptop docking station. A network disconnection issue may occur when connecting non-Dell computers to Dell monitors using the Ethernet connection. The disconnects may most frequently occur during team calls when network bandwidth usage is at its highest. The non-Dell computer disconnects from the network, but the monitor and anything connected to it functions correctly. This resolves itself within a few seconds.
Affected Monitors:
- Dell 24 Video Conferencing Monitor - C2422HE
- Dell 27 Video Conferencing Monitor - C2722DE
- Dell 34 Video Conferencing Curved Monitor - C3422WE
- Dell P2422HE
- Dell P2423DE
- Dell P2722HE
- Dell P2723DE
- Dell P2723QE
- Dell P3222QE
- Dell P3223DE
- Dell P3223QE
- Dell U2421E
- Dell U2421HE
- Dell U2422HE
- Dell U2721DE
- Dell U2722DE
- Dell U2723QE
- Dell U3023E
- Dell U3223QE
- Dell U3421WE
- Dell U3423WE
- Dell U4323QE
Dell monitors are compatible with non-Dell computers. There are there are three possible causes of this issue:
- The Realtek LAN driver used may be an older version or a version that has micro sleeps enabled. There is an issue with older Realtek driver versions and newer versions that are not from the Dell support website causing micro sleeps.
- The BIOS setting of the non-Dell computer may have allocated insufficient bandwidth to support a LAN connection and peripheral devices. There is a setting in an HP BIOS called Enable High Speed mode. When this is enabled, the USB lanes on USB-C are limited to USB 2.0.
- Usage of USB hubs or indirect connectivity.
Realtek LAN driver resolution:
- If a Realtek LAN driver is installed on the computer, it must be a minimum version of 10.56. This version and later contain the fixes for microsleep.
- If possible, turn off or disable automatic LAN driver updates on the non-Dell computer. Windows Update or the non-Dell manufacturer may update the LAN driver to one that is incompatible.
Non-Dell BIOS settings resolution:
- Check the non-Dell computer BIOS settings to ensure that data priority is selected on the device in non-daisy chain applications. Selecting display priority in the BIOS may allocate insufficient bandwidth for LAN and other USB peripherals.
Note:
- If using an HP computer, ensure that the BIOS setting for "Enable High Resolution mode when connected to a USB-C DP alt mode dock" is Disabled or unchecked. Disabled or unchecked should mean that the computer is using High Data.
- For more information about how to select data priority BIOS settings on your non-Dell computer, reference the computer manufacturer’s user guides.
USB hub resolution:
- Directly connect Ethernet and USB devices to the monitor’s Ethernet and USB ports. Do not use USB hubs or dongles attached to the monitor.
Dell monitor resolution:
- From the Dell monitor, open the on-screen display menu and check the state of USB-C Prioritization. Ensure that it is set to High Speed Data.
Note: For more information about where to find the USB-C Prioritization setting, reference the user guide for your Dell monitor from the
Dell Support Site.