This configuration block provides flexible options for wiring rows and columns to D- Sub connectors. Configuration block 34934C-001 can be used to create 4x128 1-wire or 4x64 2-wire matrices. Configuration block 34934C-002 can be used to create 8x64 1-wire, 8x32 2-wire, or 16x32 1-wire matrices. Expansion headers are also provided for creating larger matrices.