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USB Host Reservation
The AUDIO4c supports up to eight separate class-compliant MIDI devices when connected to the
single host port on the rear through a powered usb hub (not included). When using a single
class-compliant MIDI device, you may plug directly into the [Host] jack on the rear of the Audio4c
without a USB hub. Please refer to your USB MIDI device documentation to confirm the power draw
of your device; the AUDIO4c supports a maximum of up to +5V DC, 500mA of power. If your device
requires more power, you will need to power your USB MIDI device with an external power supply.
When using multiple MIDI devices this way, use the USB Host Reservation menu to assign static host
ports for your MIDI devices so they retain their host port assignment between power cycles and/or
unplugging.
To reserve a USB host port, simply plug in your USB MIDI device to a powered hub connected to the
AUDIO4c. The right-most column of the USB Host Reservation page will populate with all
class-compliant MIDI devices. Select the appropriate MIDI device you wish to reserve per host port
Back button
Select to return to the main menu
Firmware
The current Firmware version is displayed. If your computer is connected to the internet, and
connected to the AUDIO4c via USB device port 2, you can click the [Install] button on the bottom of
the menu to download and install the latest AUDIO4c firmware update from iConnectivity.com.
Otherwise, use a web browser to navigate to
https://iconnectivity.com/firmware and select the
AUDIO4c link to download the latest firmware to your computer. Be sure to note the location of your
download (usually your Downloads folder) and return to the Auracle for X-Series Firmware menu
page, select [Choose File], navigate to the downloaded firmware file and follow the prompts to install
the firmware.
AUDIO4c User Guide v2021-0002 Page 24
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