The General Purpose IO Box GPB-1 is a break-out box that works with ALEXA Mini, ALEXA Mini LF and AMIRA. It allows users to build custom button interfaces and electronic controls. The box can be connected to the camera EXT port which it also replicates. It provides protected input channels that can be flexibly mapped to various functions. Possible functions include the activation of the SDI Overlay Menu, replication of the ALEXA Mini camera buttons, ND filter or EI changes, Record Start/Stop and Stop motion trigger. Includes: K2.0007736 1x Cable ALEXA Mini/AMIRA EXT to GPB-1 Instruction Manual, 37-pin SUB-D male connector.