Another audio/video interface is [[DisplayPort]], which had version 1.0 approved in May 2006 and is supported in several computer monitors and video cards. The DisplayPort website states that DisplayPort is expected to complement HDMI.<ref>{{cite news |title=DisplayPort FAQ |publisher=DisplayPort website |url=http://www.displayport.org/FAQ/default.htm |archiveurl=http://web.archive.org/web/20080603131657/http://www.displayport.org/FAQ/default.htm |archivedate=2008-06-03 |accessdate=2008-06-19}}</ref> Most of the [[DisplayPort#Supporters|DisplayPort supporters]] are computer companies. DisplayPort uses a self-clocking micro-packet-based protocol that allows using variable amount of differential lanes as well as flexible allocation of bandwidth between audio and video., and supports encapsulating multichannel compressed audio formats in the audio stream<ref name="DisplayPort_CEA2010">{{cite web|url=http://www.displayport.org/cms/sites/default/files/downloads/DisplayPort_Technical_Overview.pdf|title=DisplayPort Technical Overview, May 2010 |publisher=VESA|date=2010-05-23}}</ref><ref>{{cite news |title=DisplayPort Technical Overview |publisher=DisplayPort website |url=http://www.displayport.org/white-papers/default.htm |archiveurl=http://web.archive.org/web/20080603131707/http://www.displayport.org/white-papers/default.htm |archivedate=2008-06-03 |accessdate=2009-05-23}}</ref> DisplayPort ports can be made so that they are compatible with single-link [[Digital Visual Interface|DVI]] and HDMI.<ref name=DP_Interop>{{cite news |title=DisplayPort Interoperability Guideline Version 1.1a|publisher=VESA.org |url=http://www.displayport.org |date=2009-02-05 |accessdate=2010-07-02}}</ref> Compatibility is achieved with dual-mode DisplayPort ports, which are marked with the ++DP logo, using attached passive adapters; active adapters allow signal conversion to dual-link DVI and analog [[VGA]].<ref name="DisplayPort_CEA2010"/><ref name=DP_Interop/>
DisplayPort has an advantage over HDMI in that it is royalty-free, while the HDMI royalty is 4¢ per device and has an annual fee of $10,000 for high-volume manufacturers.<ref>{{cite news |title=HDMI Adopter Terms |publisher=HDMI.org |url=http://www.hdmi.org/manufacturer/terms.aspx |accessdate=2008-06-23}}</ref> DisplayPort version 1.2 added the ability to transport multiple audio/video streams, doubled the maximum data rate from 10.8 Gbit/s to 21.6 Gbit/s, added support for encapsulating all of the Blu-ray audio formats, increased the "AUX" channel bandwidth from 1 Mbit/s to 720 Mbit/s, and added the ability to send Fast Ethernet, USB 2.0, DPMS, and other types of data over the "AUX" channel.<ref name="DisplayPort_CEA2010"/><ref name="PCMagDisplayPort1.2">{{cite news |url=http://www.pcmag.com/article2/0,2817,2357764,00.asp |title=VESA Upgrades DisplayPort Interface |publisher=PCMag |author=Tony Hoffman |date=2010-01-07 |accessdate=2010-05-31}}</ref> HDMI has a few advantages over DisplayPort, such as support for the xvYCC color space, [[HDMI#CEC|Consumer Electronics Control]] (CEC) signals, and electrical compatibility with DVI.<ref>{{cite news |title=HDMI Specification 1.3a |publisher=HDMI Licensing, LLC. |url=http://www.hdmi.org |format=PDF |date=2006-11-10 |accessdate=2009-11-18}}</ref><ref>{{cite news |title=DisplayPort 1.1a Standard |publisher=VESA.org |url=http://www.displayport.org |date=2008-01-11 |accessdate=2008-06-23}}</ref><ref name="PCMagDisplayPort1.2"/>
