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sys-con
Use third-party controllers on Nintendo Switch with the sys-con system module.
About sys-con
sys-con is an open-source Nintendo Switch sysmodule that adds support for third-party controllers without a man-in-the-middle setup. It targets Switch firmware 5.0.0 and later and requires Atmosphère. At present it supports USB connections only; the project states it is missing many features and that Bluetooth support is handled by a separate project. Configuration files stored at sdmc:/config/sys-con/ let users adjust stick and trigger deadzones and remap inputs, with changes applied in real time.
Key features
- Third-party controller support as a Switch sysmodule, no man-in-the-middle setup
- USB controller connections only; Bluetooth is left to a separate project
- Config files at sdmc:/config/sys-con/ for deadzone and input remapping
- Config changes take effect in real time
- Undocked USB works with a USB-C OTG adapter; some knock-off brands may not
- Roadmap lists Xbox 360, Xbox One X/S, DualShock 3 and 4, rumble and motion controls
Best for: Nintendo Switch owners running Atmosphère who want to use wired USB third-party controllers.
Good for
- No man-in-the-middle setup required
- Open source under the GPL-3.0 license
- Deadzone and remapping changes apply without restarting
Watch out for
- Only USB connections are supported at the current time
- Generic third-party HID controllers are not supported yet due to a firmware limitation
- The project states that many features are still missing
sys-con at a glance
- Website
- github.com/cathery/sys-con
- Category
- Gaming › Game Utilities & Launchers
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Good for
- Developers
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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sys-con FAQ
What firmware and custom firmware are required?
Switch firmware 5.0.0 or later, and Atmosphère only. Bluetooth support is directed to a separate project.
How do I install it?
Download the latest zip from the releases page, extract it to the SD card, then boot or reboot the Switch.
Can I adjust deadzones or remap buttons?
Yes. Options live in the config folder at sdmc:/config/sys-con/, with example.ini in the same folder; changes are updated in real time.
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