RME HDSPe Opto-X Extension Board For Hdspe Madi Fx Triple Madi CardThe RME OPTO X Extension Board works with the HDSPe MADI FX Triple MADI Card with full functionality. This extension board adds more I O ports to the internal cards of the HDSPe series. It comes with a Word Clock I O and a D sub connector for MIDI and AES I O. The standard coaxial MADI I O in this extension board is replaced by an optical MADI I O. The MADI FX offers 3 optical MADI I Os when used with the OPTO X Extension Board. Connection 1 x MADI I