Serial Port
Home A/V Connections Glossary
Serial (RS-232C) port
A serial port, or RS-232C port, is an interface that provides low-speed communication between your PC and attached devices (such as digital cameras, printers, and more). Because it is so slow in comparison to newer connections (like USB or i.LINK), fewer and fewer peripherals offer serial connections, and new PCs tend to provide only one serial port, if any. Serial ports most frequently take a 9-pin connector, although a number of older peripherals employ 25-pin serial ports.
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