• Power down the Symphony I/O MkII.
  • Disconnect Thunderbolt cable and power cable from Symphony I/O MkII.
  • Unscrew the top lid from the Symphony I/O MkII chassis.
  • Once the lid is off, look down at the Main Digital board (the board on the left).
  • In the lower right-side corner of the Main Digital board, near where the orange ribbon cables connect the front-panel display to the Main Digital board and the gray ribbon cables connect the i/o modules to the Main Digital board, you will see jumper J18 with the words ‘Auto Power On’.  Move the jumper over to the right so it is covering pins 2 and 3.

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  • Put the top lid back on the chassis and now the Symphony I/O MkII is set for Auto-Power On.