Thanks LondonLive!
I ended up using a TRS cable to connect the Mixer's 1 Aux Send to the FX's Left Input and the 2 TS cables to connect the FX's 2 Outputs to the Mixer's 2 Returns.
Moonrider,
My Mixer is the Yamaha MG102c
http://www.zzounds.com/item--YAMMG102C
My FX unit is the TC Electronic M300
http://www.tcelectronic.com/m300.asp