Where is the serial number on my Ensemble? Chris May 10, 2021 18:19 Updated The serial number for Ensemble can be found on the backside of the unit near the power plug, or on the box. Related articles It says “No Apogee Systems Found” in Apogee Maestro or Control software and my interface is not recognized Where is the serial number on my Duet? OS X Yosemite Compatibility Info I am unable to update the Touch Screen Control or "No Valid USB drive detected" message Where is the serial number on my MiC? Comments 0 comments Article is closed for comments.