Slippi Direct Connection Guide


Direct Connection



This guide will cover how to directly connect your Wii to your PC, that is to have the Wii connected to the PC via an Ethernet cable, without a router or Ethernet switch. There are a few things that will be required to successfully achieve this:


  • A modded Wii capable of running homebrew, with Nintendont-Slippi and an unmodified NTSC 1.02 ISO on it

  • A Wiimote and sensor bar

  • A Wii compatible USB to Ethernet adapter, any USB 2.0 AX88772 adapter should work, the Slippi team recommends this one

  • An Ethernet cable of appropriate length for your setup

  • A PC with two network adapters, aka two Ethernet ports, or one Ethernet and one WiFi adapter. These can be USB adapters as well

  • Slippi Launcher installed on the PC


This guide also assumes that you are using Windows 10 or macOS, the process should be similar for Windows 7, but we have not tried it.


This guide will not cover setting up homebrew on your wii. Please take a look at Kadano’s guide for that.


If you have additional questions, join our discord and ask in #support-and-bugs


Step 1

Connect your PC to the Internet via one of it’s two network adapters. If you only have one Ethernet adapter then this will need to be done via WiFi.



Step 2

Plug in the Ethernet adapter to the Wii. It does not matter which USB port you use.

Connect the Ethernet adapter on the Wii, to the Ethernet adapter on the PC via the Ethernet cable.


The next set of steps are broken down into Windows and macOS, use the section for your OS



Step 3 – Windows

Open the Network Connections page on your Windows 10 PC. To do this, press the Start button, then open Settings (the gear icon) as shown below:


Then click the Network & Internet option:

And from there click the Change Adapter Settings option:



Step 4 – Windows

Your Network Connections page should look similar to this:

You may have more network adapters listed, but you should have at least two. At this point you need to right click and open the properties of the adapter that is currently connected to the internet. For me it is the WiFi connection. Once you have the properties open, click the Sharing tab, then check the box that says “Allow other network users to connect through this computer’s Internet connection” as shown:

If you have the Home networking connection drop down box, then you need to set it to the adapter that is connected to your Wii, in order for the PC to share its Internet connection to the Wii. If you do not have this box, it is because you only have one other network adapter and you do not need to worry.



Step 3 – macOS

Navigate to the Sharing section in System Preferences



Step 4 – macOS

Open the Internet Sharing Service and set the “Share your connection from” setting to the connection that has internet access and then check the connection that is connected to the Wii in the “To computers using” section

My Wii is connected to my Thunderbolt Ethernet adapter and I am connected to the Internet via WiFI

Finally check the box next to the Internet Sharing Service



Step 5

Next, you will need to open the Settings menu on the Wii, and under the Internet section, create a Wired connection. Shown below are pictures to illustrate:

Once you click Wired Connection, it should initiate an internet connection test, and if this guide has been followed faithfully, it should succeed. If it does not succeed, then most likely you have incorrectly shared the internet connection of your PC, or have an incompatible adapter for the Wii.


You do not need to repeat this step after you’ve done it once. Do not clear your settings unless you know you can remake the connection and have a good reason to do so.



Step 6

Once you have passed this network connection test on the Wii, launch Nintendont-Slippi via The Homebrew Channel or similar homebrew loading method. Nintendont-Slippi will ask which device (SD/USB) to load from. Select the device that your NTSC 1.02 ISO is on, and navigate to your ISO. Before loading your ISO, press B to open the settings menu. It should look something like this:

In this menu, ensure you turn on Slippi Networking, if you do not, you will not be able to mirror to the PC. Slippi File Write will write replays to the USB or SD card on the Wii (whichever one does NOT have the ISO on it). This can be enabled with Slippi Networking if you wish. For Controller Fix codes, it is recommended to leave it set to UCF unless you know what you are doing.



Step 7

Once you have enabled the settings that you desire for your ISO, press B again to exit the settings menu, then press A to load your ISO. Once the game loads, open Slippi Launcher on your PC and click “Stream From Console.” If everything has gone correctly, your Wii should appear under New Connections via automatic network discovery.



Step 8

When the Wii appears under New Connections, you will need to add it by clicking the + symbol beside it, as shown below:

When you add the connection, a window like this should appear:

You will need to set the Target Folder for this connection. The target folder is where the replays from the Wii will be saved, and mirroring will not work if this is not set to a valid folder. Be sure to manually create this folder as Slippi will not create it on its own. Real-Time Mode decreases the latency on the mirror to be within a few frames of the console, and is recommended for Ethernet connections. Once you have these set correctly, click Submit.



Step 9

Now you should see the Wii listed under the Connections section of the Slippi Launcher, press Connect and the Mirror button will become available. At this point you can press the Mirror button to start the console mirror!



If you have been able to follow this guide and successfully mirror your console, congratulations!

Please take a moment to consider the magnitude of the Slippi project, and consider becoming a Patreon so that Fizzi can continue to devote as much time as possible to making Slippi the best it can be.




Static IP (Windows Only)


If your Wii fails to successfully pass the connection test (error code 52020), or if it shows up in the Launcher with the IP address, then most likely your ethernet adapter has failed to dynamically give the Wii an IP address.

First try disabling sharing, turning off the Wii, enabling sharing, and then turning on the Wii, and attempting what you were trying to do before.


If that fails, to work around this, we can manually assign the Wii an IP address.


First, open the wired connection we made on the Wii, you should see the option “Change Settings.”

On the next page, leave “Wired Connection” selected, and use the right arrow or the + button to navigate to the next page.


This page does not apply to our Wired connection, so press + again to go to the next page.



Now you should be on this menu. Set “Auto-Obtain IP Address” to No, then enter the

“Advanced Settings” menu.


Now, as long as you’re using a Windows PC, you should enter these values for IP Address,

Subnet Mask, and Default Router. These IP’s are not unique because they are private IP addresses, not public addresses.


After confirming your IP addresses, press + once more to move to the DNS settings page. As before, set “Auto-Obtain DNS” to No, and enter the advanced settings menu.


Set your DNS values as follows, and hit “Confirm.” After this step, you should be able to complete the connection again, and initiate another connection test.

If the Wii passes this connection test, congratulations! The Wii should now appear in the Slippi Launcher with the IP address, and you can connect to it. If it has failed the connection test, try disabling/reenabling the Internet Connection Share from the PC, as Windows can be flaky with ICS occasionally and need to be redone.

If you get error code 52120 after doing the above steps, go back and redo steps 3 and 4.

If this fails to resolve the issue, please head over to the Slippi Discord and ask for help in the appropriate support channel.

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