Hi Robert, Obviously what Uchendueke mentioned is FaderPort V2, the black model released in 2018.
I have both models of FaderPort 2007 and 2018, here is my experience. The FaderPort Classic does not work with BandLab Cakewalk, but you can try AZ Controller driver instead of official one. The FaderPort V2 does work with Cakewalk by selecting Cubase MCU mode.
Of course you may try it out yourself by selecting other MCU modes to see how it is with Sonar, and tell us what best result you can get.