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3.To Determine your Machine's COM port: 4.Select port and baud rate
•For Windows XP: Right click "My Computer"→ Select "Manage"→ Select "Device
Manager". For Windows 7: Right
click "Computer"→ Select "Manage" → Select "Device Manager" from left pane.
•For Windows 10: Right click “This PC"→ Select "Manage" → Select "Device Manager"
from left pane.
•In the tree, expand "Ports (COM & LPT)“ , your machine will be the USB Serial Port
(COMX), where the “X” represents the COM number, for example COM6.
•If there are multiple USB serial ports, right click each one and check the manufacturer,
the machine will be "CH340“. Select port and baud rate