Which connector is this?

What kind of connector is most commonly used for analog audio connections into a computer?

A) USB

B) TRS

C) Serial

D) FireWire

E) A can and a string

The answer: B) TRS

The 3.5 millimeter tip/ring/sleeve plugs are commonly seen on headphones and other analog audio interfaces.

Want to know more? Watch “I/O Interfaces.” If you look at the back of any computer, you’ll find many different ports staring back at you. In this video, you’ll learn to recognize some of the most common motherboard ports and connectors, including audio ports, video ports, and communication interfaces.