In fact, we found multiple rival handhelds can output 4K at 120Hz with both HDR and VRR if you plug them into the Nintendo Switch 2 dock. I saw the same with the Lenovo Legion Go S with SteamOS ...

Switch 2 Dock Runs 4K VRR at 120FPS Using Other Handhelds The test successfully showed that the dock supports VRR, and it went as far as to run 4K VRR at 120 frames per second.

The Switch 2 leaks show no signs of abating in 2025, with new images revealing the upcoming console’s purported controllers and dock. Nintendo is expected to officially announce the new gaming machine ...