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The I-7561 uses a specific USB bridge chip. While many generic USB-to-serial drivers (like Prolific or FTDI) exist, they will work with this device. Only the official ICP CON driver ensures proper functionality, especially the auto-direction control for RS-485.

ICP DAS I-7561 drivers are available for download through the official ICP DAS Download Center

The is a USB-to-RS-232/422/485 converter. It allows industrial equipment with serial interfaces to communicate with modern computers via a USB port.

🔗 https://www.ftdichip.com/Drivers/VCP.htm

Drivers for the I-7561 and its upgraded version, the I-7561U, can be found on the ICP DAS Download Center FTP Support: Official driver files are often hosted on the ICP DAS FTP Server Operating Systems: