CompTIA A+ Core 1 (220-1101) — Question 84

A technician is replacing a computer with a connected point-of-sale system using a 9-pin serial adapter. The new computer does not have a 9-pin serial port.
Which of the following ports can an adapter be installed on in order to connect to the point-of-sale system?

Answer options

Correct answer: C

Explanation

The correct answer is C, USB, as USB ports can support various adapters, including those that convert to a 9-pin serial connection. HDMI is primarily for video output, Bluetooth is for wireless connections, and Lightning is specific to Apple devices, none of which can directly accommodate a 9-pin serial connection.