USB Wireless Adapter (Brick Style) - 8BitDo

Took a chance on this brick to use my Wii U Pro controller on the Switch, and it paired instantly without any fiddly steps. The fact that it also supports motion and rumble on my PS4 pad is a sweet bonus, and it's been rock solid during long sessions.

The motion controls on my DS4 actually work wirelessly now, which I didn’t expect from such a small brick. Pairing took under a minute and it’s been rock solid during long Mario Kart sessions.

Plugged this little brick into my Switch dock and my PS4 controller connected right away, no hassle at all. The motion controls and rumble actually work through it, which is way more than I expected from such a tiny adapter.