CAMM-1 GS-24 24" Desktop Vinyl Cutter
When connecting multiple GS-24 units to a single computer, you must change the USB
number of each machine so that the computer can distinguish between output destinations.
The machine's default setting is "A." When connecting two or more machines, the second machine
and every machine thereafter must be configured with a setting other than "A" so that the machine
can distinguish the output destination of the data.
For details refer to the GS-24 Users Manual Link below