| Word | Description |
| H.264 | H.264 is a standard for video compression. |
| HDMI | HDMI (High-Definition Multimedia Interface) provides an interface between any compatible digital audio/video source, such as the VUDU box, to a digital television set. The HDMI connection is capable of 480i, 480P, 720P, 1080i, and 1080P resolutions and carries both the audio and video on a single cable connection. |
| HDTV | High Definition Television. An HDTV is a digital TV set that is capable of receiving high definition signals. These signals are usually in widescreen (16:9) format, and in 720P, 1080i, and 1080P resolution. |
| Hub | Similar to a switch except that traffic from one connection point is broadcast to all others. |