Which port is commonly used to connect a mouse, keyboard, and printer?

Understanding computer ports is fundamental to connecting peripherals. The Universal Serial Bus (USB) port is the correct answer because it is a versatile and widely adopted standard designed for connecting a broad range of peripheral devices, including mice, keyboards, printers, external storage, and more, to a computer. Its plug-and-play nature makes it incredibly convenient for users.

• HDMI (High-Definition Multimedia Interface) is primarily used for transmitting high-quality digital audio and video signals to displays like monitors, televisions, or projectors.
• VGA (Video Graphics Array) is an older analog interface specifically for video output to monitors.
• Ethernet ports (RJ-45) are used for wired network connections, enabling internet access or local area network communication, not for connecting input/output devices like mice or keyboards.