Installing the driver is only half the battle. You must configure your design software to target the correct virtual port. Common Software Connection Settings
Extract the files and run the installer (e.g., setup.exe or CDM21228_Setup.exe ). Follow the on-screen prompts. Once completed, restart your computer. Step C: Verify in Device Manager Right-click the button and select Device Manager . Expand Ports (COM & LPT) .
Run the driver installer file (usually named CH341SER.EXE or setup application) as an Administrator.
Select the that matched the one listed in Device Manager.
Note the COM port number (e.g., COM3) . You will need this for your software configuration. 4. Configuring the Driver in Design Software
Look for an entry named or USB Serial Port (COMx) , where "x" is a number (e.g., COM3). Right-click this entry and select Properties .
One of the 721PE's strengths is its broad software compatibility. It can work with both high-end professional packages and free, open-source tools.
Always keep a backup of your driver files on a USB drive; as Windows updates, you may occasionally need to reinstall the driver to keep your production line moving smoothly.
Use the same physical USB port on your computer every time to lock down the COM port assignment.
