Hello, I am new to Linux and also usb things. Sorry if this is duplicate with previous thread. I am getting issue with one device connected via usb port to a Fedora PC. This device is recognized as /dev/ttyACM0 and can be opened to connect device. After performing soft reset (by command) this device, ttyACM0 is sometimes disappeared, and increased to ttyACM1. So i had to connect to ttyACM1 to talk to device. Seem maximum port is ttyACM31. Also my device seem non-responding after reaching ttACM31 even though this port (ttyACM31) is opened successfully Do you have any suggestions to keep this port always ttyACM0 after reset? Or any alternative suggestions are appreciated. Regards, Thao -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html