Xfinity internet plans are organized by speed, ranging from 15 Mbps, ideal for one to two devices and light streaming, to 2,000 Mbps, which is good for whole-home connectivity and multiplayer gaming.

This wiring diagram shows 120 V coming from L1 of a circuit breaker, through a switch, powering a boiler control and returning through L2, back to the neutral bar of the circuit breaker box. This is ...

That cable wiring was over 20 years old, but it could reliably carry a 1Gbps signal over more than 100 feet. In a very old home with extremely outdated coax cable, you might run into issues.