1-3:MIDI 1 3 : 3 x 3 MIDI input/output port , the products MIDI input port is connected to
the MIDI output port of the MIDI device, and the products MIDI output port is connected to
the MIDI input port of the MIDI device
4:USB TO HOST : Standard USB MIDI port , used to connect to the computer, no driver
required, plug and play. Supply power to the product through this port , and connect the
computer to configure the MIDI routing and MIDI filtering of t he product.
5:Update Key: Firmware upgrade button, press and hold it to power on the product, the
product will enter the upgrade mode, and the indicator light will flash quickly.