private void USBPort_USBDeviceAttached(objectsender, USBClass.USBDeviceEventArgs e) { if (!MyUSBDeviceConnected) { if(USBClass.GetUSBDevice(MyDeviceVID, MyDevicePID, ref USBDeviceProperties, false)) {  //My Device is connected MyUSBDeviceConnected = true; } } } private void USBPort_USBDeviceRemoved(objectsender, USBClass.USBDeviceEventArgs e) { if(!USBClass.GetUSBDevice(MyDeviceVID, MyDevicePID, ref USBDeviceProperties, false)) { //My Device is removed MyUSBDeviceConnected = false; } }