The 4x4 and 2x8 MIMO configurations are shown in the Configuration Tree with asterisks because the number of playback channels and faders needed exceeds the physical number of installable baseband boards and DSP blocks. These configurations require firmware license Option N5106AK-169, Fader Interleaving for 4x4 and 2x8, to split the hardware resources and enable up to four fader channels per baseband board.
