Keith McMillen Instruments QuNexus Reference Manual

2.2.1 USB
QuNexus is connected and powered using the Micro USB port on the left side of the QuNexus.
It is a class compliant USB device and does not require a driver. This allows for maximum
compatibility with an extremely wide range of other devices.
QuNexus has 3 virtual MIDI ports that communicate with the computer. Port 1 is the main port
on which the QuNexus sends and receives MIDI data to and from the computer or iPad. Port 2
and 3 can be used for this purpose as well but are also used for communication with other
devices. Port 2 is used for the KMI MIDI Expander (sold separately) and Port 3 is used for CV.
A computer or iPad can control the QuNexus LEDs by sending MIDI data into the QuNexus on
Port 1 (see the Controlling LEDs chapter for more information).
2.2.2 MIDI
The KMI MIDI Expander is required to send and receive MIDI Data via 5-pin MIDI devices. The
MIDI Expander can be used with or without a computer or iPad connected. Power is supplied to
QuNexus from the MIDI Expander’s power port when the MIDI Expander is plugged into a
power outlet. If connected to a computer (or iPad) and a MIDI Expander, power is supplied to
the QuNexus from the Micro USB port instead of the Expander.
9

Keith McMillen Instruments QuNexus Specifications

General

Brand	Keith McMillen Instruments
Model	QuNexus
Category	Electronic Keyboard
Language	English