Some IKEA desks are Linak but I'm not sure if Bekant is.

I got it by reaching out to a local distributor of Linak products in my country as I couldn't find any online website selling it at the time. You might try that, they might even know if it's compatible (or at least would know how to check).

Oh, I would suggest getting the new controller instead of the dongle since that one supports both BLE and it has physical buttons which is always great.