> For the complete documentation index, see [llms.txt](https://support.4cast.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.4cast.world/6.-configuration/network-midi-interface.md).

# Network MIDI Interface

The **Network MIDI Interface** setting controls which of the MVP's network connections (Ethernet or Wi-Fi) advertises the RTP-MIDI session. 

It lives in the **System Settings** dialog, under the **Network MIDI Interface** expandable panel.

<figure><img src="/files/RmWzPsYbbTKoTs1K1Agq" alt="" width="563"><figcaption></figcaption></figure>

### Choosing an Interface

| Option       | Advertises on | When to use                                                                                                       |
| ------------ | ------------- | ----------------------------------------------------------------------------------------------------------------- |
| **Ethernet** | `eth0`        | Default. Use for fixed installations, FOH-to-stage runs, and any show where latency and jitter must be minimised. |
| **Wi-Fi**    | `wlan0`       | Use when the MVP is connected over Wi-Fi and no Ethernet is available.                                            |

> **Performance Note**: RTP-MIDI over Wi-Fi is more susceptible to latency and jitter than Ethernet. For critical live performances, select **Ethernet** whenever a hardwired connection is available. See [Network MIDI (RTP-MIDI) Setup](/5.-triggering/network-midi-rtp-midi-setup.md) for full network setup instructions.

***

### Security Considerations

When **Wi-Fi** is selected, anyone on the same Wi-Fi network can discover and connect to the MVP's RTP-MIDI session. Do not use RTP-MIDI over Wi-Fi on public or untrusted networks.

* On a trusted private Wi-Fi network (e.g., a dedicated show network), this is safe.
* On public Wi-Fi (e.g., a venue's guest network), use **Ethernet** instead, or ensure the Wi-Fi network is isolated and password-protected.

***

### Related Pages

* [Network MIDI (RTP-MIDI) Setup](/5.-triggering/network-midi-rtp-midi-setup.md) — Full setup guide for macOS and Windows
* [System Settings](/6.-configuration/system-settings.md) — All device-level settings
* [Wi-Fi Setup](/7.-networking/wifi-setup.md) — Connecting the MVP to a Wi-Fi network
* [Ethernet & ArtNet Configuration](/7.-networking/ethernet-and-artnet-configuration.md) — Ethernet IP configuration
* [IP Range Conflicts](/7.-networking/ip-range-conflicts.md) — What happens when Ethernet and Wi-Fi share a subnet