The serial number for Duet (FireWire), Duet 2 (USB), or Duet for iPad/Mac can be found on the backside of the unit usually next to a bar-code, or on the box.

  • Duet for iPad/Mac, the serial will begin with a letter, a number, then a letter such as “B9N123456789876″
  • Duet 2, the serial will begin with four letters such as “DTAB123456″
  • First generation Duet (Firewire), the serial will begin with “DU12345″