SWAP Need a USB keyboard midi controller

[HA_DA_JA]

I am finding that I would use a smaller USB keyboard more than the old conventional keyboard for inputting information and accessing software synths into my DAW programs. I have a a 4 channel noise gate brand new in box that I have not used that I would love to swap for one of these. The model is the XR4400 be!@#$%^& unit. PM if you can help out. I am looking for something not too old so something that is USB 2.0 compliant would be great.
Cheers