Rocktron MIDI Xchange - Manual (Page 17)

POWER ON SEQUENCE
SELECTING AND RECALLING PRESETS
When power is applied using the Power switch (see point 2), the
MIDI XChange’s display a blue LED will begin to flash. The
number that appears in the display will look like this:
Now you are ready to select a preset. To select preset number 1 at
this point - depress the RECALL switch (see point number 7 for
details on the RECALL switch) - the display and the blue LED
will stop flashing. This indicates that preset number 1 is selected
as shown below: