The technology keeps on changing and the old time devices become obsolete with the advent of the new technology. The bridging between the two technologies may become necessary when you are using two devices of different generations.
If you are having some serial device and you want to connect it to the latest technology PC then you may take use the serial to USB adapter as this will help you connect the serial device to the USB device without making any major changes in the device itself. The CAN USB converter is also used by many technology lovers to connect such devices.
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