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DisplayPort Overview

Learn More About DisplayPort

DisplayPort technology released in May of 2006 has transformed the world of computers, by offering for the first time, a multipurpose single interface. Unlike numerous attempts in the past to adopt new video connections; DisplayPort brings a wealth of features and benefits that serve a purpose beyond video, giving users an advantage that they did not have with competing video connection types.

DisplayPort is both an external and internal connection type. The external type is used from connecting desktop computers to monitors and televisions, while the internal is designed to connect laptop screens to an integrated graphics card. The locking connector design on DisplayPort cables make installation just as quick as HDMI without having to worry about the cabling disconnecting or having to struggle with thumbscrews. With dual- mode graphics cards, DisplayPort can operate with previous video connections on existing monitors by using adapters such as VGA, DVI and HDMI. Using specific DisplayPort enabled monitors, a single cable can deliver high resolution uncompressed digital video and sound, while accommodating connections from peripherals such as a mouse, keyboard and/or web camera. The multipurpose interface design saves clutter created by multiple connections to the back of the computer by carrying peripheral data through the DisplayPort cable's AUX channel.

DisplayPort also has the ability to connect multiple monitors through a single connection on the computer's graphics card by using a hub or daisy chaining monitors together. The multiple monitors feature can support up to four 1080p high resolution monitors. Similar to HDMI, DisplayPort can handle modern 3D technology and content protection for gaming and Blu-ray movies, as well as 4k x 2K resolution. Macintosh was an early adopter of DisplayPort technology, by implementing a smaller form factor version known as mini Displayport on their new computers and monitors. AMD's Eyefinity solution found on select ATI graphics cards utilizes the same mini DisplayPort connection to provide support for multiple monitor panoramic setups for gaming, multitasking, and even commercial applications use such as digital signage.


  • A single, flexible, digital A/V interface to replace multiple existing video interface types
  • Legacy displays and HDMI are supported through video adapters
  • Important as PC users move to notebooks and other portable devices with limited receptacle space
  • Adaptable to internal and external display applications
  • Integrates easily into sub-micron chips, enabling wide spread adoption

Comparison with HDMI and DisplayPort:

  HDMI DisplayPort
  • +5V, 50mV max output
  • Audio signal compatible up to 8 channels at 192Khz
  • Max data rate of 10.2 Gbps data transfer protocol TMDS
  • Video performance up to 340Mhz going up to at least 2160p at 6 feet with data with rates of 400Mbis
  • 3.3V, 16V, 500mA max output
  • Audio signal compatible with up to 8 channels at 192Khz
  • Max data rate of 17.3 Gbps and uses packet protocol for data transfer at 15 meters it can support up to 4 1080p devices
  • 19 pin connections rated at 6 ft
  • 20 pin connections
  • Locking connector
  • Rated for sizes from 2m to 15m
  • Royalties associated
  • Non-latching terminals
  • No power supple capability
  • Power supply capablity
  • Latching capability
  • Royalty free

Standard Displayport Connector — Similar in size to USB optional latching connector

Mini-DisplayPort Connector — Attractive where I/O space is at a premium

This white paper is for informational purposes only and is subject to change without notice. C2G makes no guarantees, either expressed or implied, concerning the accuracy, completeness or reliability of the information found in this document.