If you are puzzled by having to stress-test COM/RS232 ports and see no easy way to do that, make sure you don´t miss COM Port Stress Test, as it does exactly what you need! COM Port Stress Test is a compact and affordable tool for testing COM, RS232 and RS485 (with converter) ports that generates an extremely fast data stream with alternating baud rate, flow control, RTS and DTR states. Try this software now and you won´t be disappointed!