Ethernet Port on Dell U4021QW Monitor Disconnects from Internet
Summary: This article is about Ethernet port not working on Dell U4021QW monitor. This occurs when port is connected to a system either through Thunderbolt, USB type A, or USB B to USB type C.
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Symptoms
Internet connection drops when using the Ethernet port on Dell U4021QW monitor.
Dell U4021QW monitor using a Notebook through Thunderbolt, USB A to C, or USB A to B cable, exhibits Ethernet port (RJ45) not staying connected to the network.
Affected Platforms:
All platforms
Affected Models:
Dell U4021QW Monitor
Cause
The Ethernet port stops working due to a power-saving setting enabled in Realtek LAN Controller.
Resolution
Disable Realtek USB GbE Family Power Saving.
Follow these instructions to modify the Power-Saving settings on Realtek USB GbE Family Controller.
- Open the Windows Device Manager.
- Go to Network Adapters.
- Double-click Realtek USB GbE Family Controller.
- Click Advanced tab.
- Under Property, click Idle Power Saving.
- Set the Value as Disabled.
- Click OK.
Additional Information
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Products
Dell U4021QWArticle Properties
Article Number: 000182947
Article Type: Solution
Last Modified: 21 Jun 2021
Version: 4
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