Marani MIR480I Professional Audio Processor User Guide

USB Connection Guide
When using USB online, different PC software and hardware may have
different results and solutions.
1. When your PC system is Windows XP/7, the system will not recognize
the device properly (as shown in Figure 1), and you need to install the
STM32 virtual serial port driver.
Figure 1
2. When your PC system is Windows 8/10,
The system will correctly recognize the device to the STM32 virtual seri
al device and can be connected normally without any settings .(Figure 2)
Figure 2
3. When the serial port number is too high (greater than 16) or the serial port
number is occupied, you can try - Properties - to change the serial port
number, or empty the registry to reduce the serial port number.
Right-click on "This PC"— Properties -- Device Manager -- Ports(COM and
LPT) to view the current serial port number.( Figure 3)
Figure 3
You can see that the serial port number is 17, double-click this device or
right-click the Properties to enter the following interface (Figure 4)
Figure 4
Click Port Settings(Figure 5)
Figure 5
Click Advanced to select a lower port number in the COM port number
(Figure 6)
Figure 6
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