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The USB to Serial Converter is the easiest way to connect your serial device to the USB port on your PC or Mac. This product operates as a bridge between one USB port and a standard Serial (RS232) port. Newer PCs are no longer equipped with serial (COM) port. But you want to use old serial device that is still working just fine. This adapter will add serial port to your new machine easily. The six foot cord lets you reach your device comfortably!