![]() However, serial ports are still frequently used in applications demanding simple, low-speed interfaces, such as industrial automation systems, scientific instruments, point of sale systems and some industrial and consumer products. Modern consumer personal computers (PCs) have largely replaced serial ports with higher-speed standards, primarily USB. While interfaces such as Ethernet, FireWire, and USB also send data as a serial stream, the term serial port usually denotes hardware compliant with RS-232 or a related standard, such as RS-485 or RS-422. Throughout most of the history of personal computers, data has been transferred through serial ports to devices such as modems, terminals, various peripherals, and directly between computers. This is in contrast to a parallel port, which communicates multiple bits simultaneously in parallel. On computers, a serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. The response time between connecting the cable and seeing the result in Device Manager is the USB Serial Port driver doesn't work.A male D-subminiature connector used for a serial port on an IBM PC compatible computer along with the serial port symbol If you unplug the cable, the port will no longer be listed, plug it back in, and it will be listed. The way to tell the installation of the Cisco USB driver is good and the connection is good is as follows: Open the Windows Device Manager, navigate to the Ports (COM & LPT) section and open the section so you can view the indivicual Ports, plug the cable into the PC and the Cisco router and you'll see a new port appear, typically COM4 which is the default as setup by the Cisco USB Console driver.
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