TTEZN10P3PIN is a 1RU EZ Norm programmable patchbay with 3 pin I/O.EZ Norm Series TT/Bantam audio patchbays utilize EZ Norm technology, allowing signal flow to be modified from the front of each channel using a standard screwdriver. Now, our most popular EZ Norm TT patchbays come standard with easy access programmable grounds, making it possible to custom configure the ground setting of each channel to either vertically strapped or isolated