The BLU Link card provides up to 32 inputs and 32 outputs to/from a BSS Blu Link ring, and can be used to interface to BSS London networked audio systems, or to the PMC Personal Monitoring Controller. 
The Blu Link redundant ring allows for up to 256 channels, so the Vi Blu Link card contains internal DIP switches that allow a block of 32 sequential channels from the 256 to be addressed by the card, separately selectable for inputs and outputs. 

In addition the card can be set as clock master or clock slave, according to system requirements. When acting as a slave a jumper cable (included) must be connected from the card’s wordclock out to the consoles wordclock input.  

: SCF-VISBBLU