We can't get the information through the SerialPort type. I don't know why you need this info in your application. However, there's a solved thread with the same question as you. You can check out the code there, and see if it yaşama help you. Caret=Sönen çizgi, blok veya https://elektrik32974.blogdiloz.com/25579284/açıklaması-c-serialport-kullanımı-hakkında-5-basit-tablolar