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?
USB to LAN adapter
USB to HDMI adapter
USB to serial converter
DB9 to RJ45 adapter
Serial to VGA adapter