If the Ethernet port on the Type-C 2-in-1 USB Hub with Ethernet (ST-TC2N1USB31AS, ST-TC2N1USB31AM) is not giving you a wired connection, work through the connection order first, then the router port and cable. On current versions of Windows, macOS, and ChromeOS the Ethernet on this hub is plug-and-play, so no software is needed, and the port runs at 10, 100, or 1000 Mbps up to Gigabit speed.

How to fix Ethernet problems on the Type-C 2-in-1 USB Hub with Ethernet

1. Plug your Ethernet cable into a LAN port on your modem or router, then into the RJ-45 port on the hub.
2. Connect the hub to a Thunderbolt 3 or USB-C port on your computer and make sure the connector is fully seated.
3. Try a different USB-C or Thunderbolt port on the computer.
4. Connect the Ethernet cable to a different LAN port on your router or switch. An inactive router port looks exactly like a dead adapter.
5. Test the Ethernet cable on another device to confirm the cable itself works.
6. Check that your computer sees a wired connection. On a Mac, open System Settings and go to Network. On Windows, open Device Manager and expand Network adapters.
7. Check whether the hub itself appears in System Information under USB on a Mac, or in Device Manager on Windows.
8. Unplug the hub, wait a few seconds, then reconnect it and check again.
9. Restart your computer, then reconnect the hub.
10. Reduce the load while testing. All ports on the hub can be used at once, but connect only one bus-powered device at a time and make sure your computer's USB-C port supplies enough power.
11. Connect the hub to a computer, not to another device. The Type-C 2-in-1 USB Hub with Ethernet needs to be connected to a computer with an operating system, so it cannot be plugged directly into a printer to put that printer on the network.
12. Test the hub on a different computer to confirm whether the issue is the hub or the host device.