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‐ When the total number of connected device ports exceeds 8, H4MIDI
WC will not recognize the excess ports.
‐ When H4MIDI WC is powered by DC, if the total power consumption
of the connected devices exceeds 1A, please use a powered USB hub
or independent power supply to power the external devices.
⚫ The computer does not receive MIDI messages when playing a MIDI
keyboard.
‐ Please check if the H4MIDI WC is correctly selected as the MIDI input
device in your music software.
‐ Please check if you ever set up custom MIDI routing or filtering
through the HxMIDI Tools software. You can try to press and hold the
button for 5 seconds in the power-on state and then release it to reset
the interface to the factory default state.
⚫ The external sound module is not responding to MIDI messages
played by the computer.
‐ Please check if the H4MIDI WC is correctly selected as the MIDI
output device in your music software.
‐ Please check if you ever set up custom MIDI routing or filtering
through the HxMIDI Tools software. You can try to press and hold the
button for 5 seconds in the power-on state and then release it to reset
the interface to the factory default state.
⚫ The sound module connected to the interface has long or disordered
notes.
‐ This problem is most likely caused by MIDI loopbacks. Please check if
you have set up custom MIDI routing via the HxMIDI Tools software.
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