If you had an existing installation of Cat5e on your campus, what is the highest speed you could run?

Cat5e can support up to 1 Gb/s via the 1000Base-T specification. Since 10Base-T, 100Base-T, and 1000Base-T can be run up to 100 meters in length, it allows for interchangeability with speeds. It was very common when Cat5e came out 20 years ago for installers to future-proof wiring installations with it. 10 Gb/s requires Category 6 or 6a cable to operate at speeds of 10 Gb/s. All other answers are incorrect.