The Nintendo Switch’s firmware update last month ended up bricking a couple of consoles, but as it turns out, it wasn’t the fault of the update—it was the fault of third-party docks and chargers.
At the time, Nintendo was quick to speak out and advise users to switch to “officially licensed Switch products,” and a representative from Nyko—one of the third-party dock manufacturers—told Kotaku that the issue stemmed from “the way the Switch handles AV output for an external TV/monitor while the console is docked.”
Now, Nintendo has come forward with the details you’ll need to know to see if your third-party accessories are safe for future use with your Switch.
Nintendo’s Japanese support page reveals that any USB-C to USB-C chargers should be safe. USB-A to USB-C chargers should also work, as long as they’re sporting 56K OHM resistors. In other words, don’t cheap out and get a cable without the proper resistors, and you should be fine. Of course, all official Nintendo accessories meet these requirements as well, so if you’re in doubt, getting the officially licensed accessories can’t hurt.
If your Switch was harmed or if you have more questions, check out Nintendo’s support page.
Source: Nintendo Support