A: Test the USB cable and port. Try a different USB port (preferably USB 2.0, not 3.0). Also, check if the plotter is in "USB mode" – some Foison C24 units require a menu setting: press MENU > INTERFACE > select USB .
, extracted the contents, and ran the installer as an administrator. Only then did he connect the machine. A notification chimed. In the Device Manager , the "Unknown Device" transformed into USB Serial Port (COM3) Usb Driver Foison C24 64 Bit
: Find the "USB Serial Port" or "Unknown Device" under the Ports (COM & LPT) or Other devices section. Manual Update : Right-click the device and select Update Driver . Choose Browse my computer for drivers . A: Test the USB cable and port
uses a USB interface that functions as a virtual COM port. On 64-bit versions of Windows (10, 11, etc.), the system often fails to recognize the device automatically, labeling it as an "Unknown Device" or "USB Serial Port" with a yellow exclamation mark in the Device Manager. , extracted the contents, and ran the installer