The Yamaha DCH8 Digital Controller Hub allows the audio engineer to connect up to 8 wall control panels to a MTX/MRX control device for a flexible system structure. From the Manufacturer: Divides the control line from host devices such as the Yamaha DME7 and MTX/MRX series into up to 8 lines. Features: The DCH8 allows as many as 8 DCP wall mount control panels to connect to a Yamaha MTX or MRX external control device. The DCH8 splits the control line from the host MTX/MRX into 8 lines and allows a flexible system structure that may combine star connections and daisy chain connections. Specifications: Small footprint with half rack space design 1 RJ45 output and 8 RJ45 inputs Allows connection distance up to 200 meters Compatibility: Yamaha MTX or MRX Input: 8 x RJ45 Output: 1 x RJ45