Cable: What is the Difference Between Cat5E and Cat6?

This article explains the technical differences between Category 5E and Category 6 cable.

Cable: Cabling for Special Applications: What Do Those Types Mean?

This article explains the different kinds of indoor and outdoor ethernet cable and when to use them: PVC, plenum, gel-filled, direct burial, UV, and shielded.

HDMI: Everything You Ever Wanted to Know About HDMI Cables

This article explains what HDMI cables are, what they're used for, and what the specs mean.

RJ11: Overview of Telephone Connectors

A brief history of telephone connectors and an overview of the modern RJ11 jack.