PRESONUS AudioBox 44VSL Quick Start Manual page 36

2 Hookup
2.2 Rear-Panel Connections
8
MIDI I/O. MIDI stands for "Musical Instrument Digital Interface. " MIDI inputs
and outputs allow connection to, and communication with, external MIDI
equipment. One function of these ports is MIDI sequencing but the MIDI
protocol can be used for much more than instruments and sequencing.
NOTE: MIDI is not audio but is frequently used to trigger or control
an audio source (such as a plug-in or synthesizer). It's important
to ensure that your MIDI data is correctly sent and received by the
appropriate hardware or software devices. If the devices generate
audio, you may also need to return the audio to an AudioBox
22/44VSL input channel. Please consult the User's Manuals of
your MIDI devices for help with MIDI setup and usage.
USB 2.0 Port. This is where you connect the USB cable from your AudioBox 22/44VSL
to your computer. The AudioBox 22VSL is bus-powered via this connection and does
not require an external power supply.
Power Input (AudioBox 44VSL Only). This is where you connect the power
supply for your AudioBox 44VSL. The AudioBox 44VSL cannot be bus powered.
PreSonus AudioBox 22/44VSL
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