korg digital delay with cubase 9

Hi,i got my hands on a kork digital delay unit sdd-3000.
does anyone know how i would set this up with cubase 9,i have a focusrite saffire pro 24
i understand about the external fx section in cubase,but the part im struggling with is all the sockets at the back of the korg unit.
Im hoping maybe someone knows.

sends on the korg are outputs and need to go into inputs of your soundinterface, the returns are inputs and need to go into outputs of your sound interface.

So you need at least 2 inputs minimal and 4 outputs minimal (if you want your monitors to be connected)