Review on 🔌 CooSpo USB ANT Stick: The Ultimate Compatibility Solution for Zwift, TrainerRoad, Wahoo, Garmin, and More! by Flavio Scarola

This should be the most universal key. It has a zero mark. It has no ANT+, BT, Logitech or any other symbols on it. If I were to drop it in a bunch of other keys, I think the only way to tell it apart is to find one that literally has no mark or other markings. You might want to mark it with a marker when you get it so you know what it is. However, the thing works. There's never been a better Zwift experience. This thing was about 1 meter from my bike and still perfectly tracking all my sensors (speed, cadence, heart rate).