can I use UR824 as AD/DA convertor connected to a PCIe interface as master?

the configuration of my home studio provides the RME HDSPe RayDAT as the master audio interface with an Yamaha O3D and a Frontied design Tango 24 via ADAT.
can I use an UR824 as AD/DA convertor connected to my master interface with the ADAT fiber-optical cables as slave?
can I still manage the DSPfx via USB or are there conflicts between the two drivers?
thanks for the interest