Which interface is commonly used to connect peripheral devices like mice and printers to a computer?

The correct answer is USB because it is a universal standard that allows for easy connection of a wide range of peripheral devices, including mice, keyboards, printers, and storage devices, to computers. USB (Universal Serial Bus) provides a simplified and versatile interface, allowing for hot swapping—connecting and disconnecting devices without turning off the computer—and supports data transfer rates that vary depending on the specific version (including USB 2.0, USB 3.0, and USB-C).

In contrast, while RS-232 is a standard for serial communication often used for older devices, it has largely been replaced by USB for most consumer peripherals due to its slower data transfer rates and limited support for modern devices. The serial port, which is a type of RS-232 connection, is also outdated and not commonly used for peripherals today, as it typically offers less versatility compared to USB. Ethernet is primarily used for networking purposes, such as connecting computers to the internet or local networks, and is not suitable for connecting individual peripheral devices. Thus, USB stands out as the most relevant and widely adopted interface for the connection of peripheral devices.