Hey there! Let's walk through fixing your setup step by step—your goal of getting the ASUS RT-AX55 working as a dedicated VR AP makes total sense, since that model does play nicely with SteamVR/Pico 4 streaming.

First, let's recap your current setup to make sure I'm on the same page:

• Main router (192.168.0.1) provides internet, connected to your Windows 10 PC via WiFi
• ASUS RT-AX55 is plugged into your PC via Ethernet (using a LAN port on the router)
• Right now, the Ethernet connection shows "Unidentified Network" with a 169.254.x.x auto-config IP, and you can't access the RT-AX55 admin panel

Step 1: Temporarily configure your PC's Ethernet to access the RT-AX55 admin page #

ASUS routers default to the 192.168.50.1 IP address. Since your PC and RT-AX55 aren't on the same subnet right now, we'll fix that first:

• Open Control Panel > Network and Sharing Center > Change adapter settings
• Find the Ethernet adapter connected to the RT-AX55, right-click it > Properties
• Double-click Internet Protocol Version 4 (TCP/IPv4)
• Select Use the following IP address and enter:
  • IP address: 192.168.50.2
  • Subnet mask: 255.255.255.0
  • Default gateway: Leave blank (or enter 192.168.50.1 if needed)
• Click OK, then open your browser and go to 192.168.50.1—you should now see the RT-AX55 login page (use the default credentials printed on the router's bottom label)

Step 2: Set a static IP for the RT-AX55 (and disable DHCP) #

We need to put the RT-AX55 on the same subnet as your main router so it can share the internet and be accessible:

• Once logged into the RT-AX55 admin panel, navigate to Network > LAN (exact menu wording might vary slightly, but look for LAN settings)
• Change the LAN IP Address to a static IP in your main router's subnet—since your main router is 192.168.0.1, pick an IP that's outside your main router's DHCP range (e.g., 192.168.0.2—check your main router's admin page to confirm this IP isn't already in use by another device)
• Set Subnet Mask to 255.255.255.0
• Set Default Gateway to your main router's IP: 192.168.0.1
• Set DNS Server to either 192.168.0.1 (use your main router's DNS) or a public one like 114.114.114.114
• Critical: Find the DHCP server settings on the same LAN page and set DHCP Server to Disabled—we don't want two DHCP servers on the same network, which would cause conflicts
• Save the settings, and the router will restart. After it comes back up, you'll access its admin page at the new static IP: 192.168.0.2

Step 3: Enable internet sharing on your Windows PC #

Now we need to let the RT-AX55 use your PC's WiFi connection to access the internet:

• Go back to Change adapter settings in Control Panel
• Find your WiFi adapter (connected to the main router), right-click it > Properties
• Switch to the Sharing tab
• Check the box that says Allow other network users to connect through this computer's Internet connection
• From the Home network connection dropdown, select the Ethernet adapter connected to the RT-AX55
• Click OK—Windows will automatically configure the Ethernet adapter's IP, but since we already set the RT-AX55's static IP, this won't cause issues

Step 4: Configure the RT-AX55's WiFi for VR streaming #

Finally, set up the WiFi network your Pico 4 will use:

• Go back to the RT-AX55 admin panel (192.168.0.2)
• Navigate to Wireless > General
• Set up your WiFi network:
  • For best VR performance, use the 5GHz band (it has less interference and higher bandwidth)
  • Set a WiFi name (SSID) and password (you can match your main router's if you want seamless roaming, but it's not required)
• Save the settings, and the WiFi will activate

Final Checks #

• Your PC's Ethernet connection should now show as "Network" instead of "Unidentified"
• Test internet access on the RT-AX55: You can do this by connecting a device to its WiFi and trying to browse the web, or checking the router's admin panel for internet status
• For Pico 4 streaming: Make sure the headset is connected to the RT-AX55's WiFi—since both the PC and headset are on the 192.168.0.x subnet, SteamVR/Virtual Desktop should detect the headset without issues, and you'll still have internet access for standalone mode when needed

备注：内容来源于stack exchange，提问作者JsonSlim