Specifications include, but are not limited to: The space available for the two pieces of hardware that maup the system must match the existing units, as additional space is not available. The available space is is 8U (8 rack units). The new replacement hardware units from EVS are only 6U or 2U.; Connectivity, inputs and outputs must match the exsisting units to match the number and type of connections currently available in the mobile production unit truck. There is no physical room to add more or change the types of cabling and connectors.; There is no more capacity within the other connected systems to handle different or more inputs and outputs from a device of this type of equipment.; The video system in the mobile unit can only understand NTSC 1080i video standards which the requested system is designed to conform to.