Multiple X2U or Motiv devices into one computerFAQ #3712
Question:Can I use 4 X2U devices to record simultaneously with my Mac? The Mac has 4 USB ports.
It depends upon the configuration of the Mac computer. The MV5, MV51, MVi, and X2U act as USB audio devices. Contact Apple to find out about "aggregate devices." This configuration may allow multiple Motiv or X2u units. The solution lies with Apple, not with the Shure products.
Or look for a four input USB recording interface - the equivalent of four X2U units in one enclosure.
Windows does not allow multiple Motiv or X2u devices to be connected at the same time.