Akai MPK261 User Manual page 35

7. MIDI In: Use a standard five-pin MIDI cable to connect this MIDI In to the MIDI Out of an
external MIDI device (e.g., another MIDI controller). The MIDI messages sent to this MIDI
In will be sent to your computer via the USB port.
8. Expression Pedal Input: Connect an optional 1/4" TRS expression pedal to this input.
9. Footswitch Input: Connect an optional 1/4" TS sustain pedal or footswitch to this input.
(You can configure the connected pedal to control the keyboard's sustain, to send a MIDI
CC message, or other messages.)
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