Can MkII i/o modules be used in the older Symphony I/O?
No. The newer MkII modules are only supported in the Symphony I/O MkII.
Supported i/o modules for Symphony I/O (original):
- 8x8 AES/OPT (original)

- 8x8 AES (original)

- 8x8 OPT (original)

- 16x16 Analog In/Out (original)

- 16 Analog In / 16 Digital Out

- 16 Digital In / 16 Analog Out

- 2x6

- 8MicPre

The only restriction for which i/o modules can be placed in the primary slot or the secondary slot is when using the 8MicPre module. In that case, you must have an 8x8 (original), 16x16 Analog In/Out (original), or 16 Analog In/16 Digital Out module in the primary slot and the MicPre module in the 2nd slot.
To see i/o module compatibility for the newer Symphony I/O MkII, click here.