M-200i: How to Add More Than One Digital Snake
The M-200i includes one REAC port in order to connect a single Roland digital snake. However more than one digital snake can be used with the console. In order to accomplish this, an S-4000M merge box can be used to expand the amount of REAC ports in the system:
http://proav.roland.com/products/s-4000m/
Important Note: A 3rd party switching hub can be used to split audio (output audio) only. If additional digital snakes are needed to increase input capacity, an S-4000M Merge Unit is required.