The OPTO-X is an optional extension board for the HDSPe MADI FX triple MADI card with full functionality.
Like the standard extension board it comes with Word Clock I/O and a D-sub connector for MIDI and AES I/O.
The standard coaxial MADI I/O is replaced by an optical MADI I/O.
Using the OPTO-X the HDSPe MADI FX then has three optical MADI I/Os
1 x MADI I/O optical
1 x MIDI I/O via D-sub
1 x AES I/O via D-sub