The subsequent-era USB “Type C” normal that became available to manufacturers final month will additionally offer a “DisplayPort Alternate Mode”, enabling the brand new USB cables to “ship full DisplayPort audio/video (A/S) efficiency, driving monitor resolutions of 4K and past, SuperSpeed USB (USB 3.1) knowledge and as much as one hundred watts of energy–over a single cable.” That means new USB cables that undertake the brand new slimmer Type-3 normal can primarily additionally work as a full-fledged DisplayPort cable. The announcement was made at the moment by The Video Electronics Standards Association (VESA), which labored with the USB 3.zero Promoter Group to offer the functionality:
VESA utilized the Alternate Mode practical extension of the USB Type-C specification within the improvement of this new Standard. The DisplayPort Alt Mode repurposes some or all the 4 present SuperSpeed USB lanes to ship full DisplayPort efficiency, and makes use of different signaling obtainable within the USB Type-C connector for DisplayPorts AUX channel and HPD (Hot Plug Detection) perform. This allows computer systems, tablets, smartphones, shows, and docking stations to implement the brand new USB Type-C connector at each ends whereas utilizing the DisplayPort Standard over USB Type-C to transmit excessive-decision A/S together with USB knowledge and energy.
The result's producers may be capable of take away DisplayPort, VGA, and HDMI ports from their units and offer energy, USB knowledge, audio, and video over the only USB Type C cable. Although you’ll additionally nonetheless have the ability to use USB Type C to drive DisplayPort, HDMI, DVI or VGA shows utilizing an adaptor. Reports claim a rumored 12-inch MacBook Air will arrive subsequent yr with USB Type C solely for its USB ports and that might make DisplayPort Alt Mode fairly essential for new MacBook house owners in 2015. “By leveraging USB Type-Cs flexibility, the DisplayPort Alt Mode can select to transmit on only one or two of the 4 obtainable lanes, in order that the opposite two lanes can be utilized for SuperSpeed USB knowledge on the similar time. In a docking station connection, for instance, using two lanes for DisplayPort at 8.1 Gbps per lane would permit simultaneous switch of SuperSpeed USB knowledge (as much as 10 Gbps in every path) whereas additionally supporting a 4K UHD (3840 x 2160) DisplayPort monitor.”
VESA says preliminary DisplayPort Alt Mode USB Type-C units will use the present DisplayPort 1.2a, which helps 5.4 Gbps per lane and as much as 4K (4096 x 2160) resolutions at a 60Hz body fee. That means we’ll doubtless see USB Type C additionally help the recently announced DisplayPort 1.3 standard that gives a better 8.1 Gbps per-lane hyperlink fee and consequently help for subsequent-gen 5K shows.
Filed beneath: Mac