Yes! Multiple M4U
XT can be used simultaneously. Under Mac OS X, you can simply connect them
to the system at the same time and all untis will be available. Under Windows
(XP, Vista, 7 and 8- both 32- and 64-bit), a special driver
is required that can be downloaded from our website. Please note that device numbering
depends on the USB ports you use for each unit - this means that if you change
a USB port for one of the connected interfaces, the port numbering might change.
Because of that, we recommend to keep the M4U XT units always connected to the
same USB ports.