An IT technician needs to connect a legacy piece of equipment to a modern computer to update its firmware. The equipment only has a serial interface available for the update process. The technician's computer does not have a built-in serial port. Which of the following would BEST solve this problem while ensuring a stable and secure update process?
A USB to serial converter is the correct answer because it allows a modern computer without a serial port to connect to a legacy device that requires a serial interface. This adapter provides the necessary hardware and driver support to create a virtual serial (COM) port on the computer. A USB to HDMI adapter is incorrect as it is used for video output, not serial data. Similarly, a USB to LAN adapter provides an Ethernet network connection, not a serial interface. A DB9 to RJ45 adapter is also incorrect because it is a passive adapter that only changes the connector shape, typically for use with console cables on network equipment; it does not convert USB signals to serial signals or solve the problem of the computer lacking a serial port.
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What is a USB to serial converter used for?
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What are the key differences between USB and serial communication?
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What types of legacy devices might require a serial connection?