New never used.
Manufacturers description from https://amzn.to/3g59sPC
he Kaico Nintendo Switch Controller Adapter is a no lag USB device that connects via a free USB port on the Nintendo Switch’s docking station.
This allows a Bluetooth connecting controller such as a PlayStation 4 or Xbox ‘One S’ controller to be used or alternatively ANY PS4, PS3, Xbox 360 or Xbox One USB wired controller.
The controller adapter allows any controller using Bluetooth to connect to the Switch and be used in gaming with virtually no lag.
This includes but isn’t restricted to:
- PlayStation 3
- PlayStation 4
- PlayStation Pro
- Xbox One S
- Xbox One X
Alternatively, it allows some controllers to be connected by wire including the version one Xbox One controller (which runs on 2.4ghz technology and not Bluetooth).