If you like DisplayPort 1.3 wait until you meet USB 3.1

Subject: General Tech | September 23, 2014 - 12:44 PM |
Tagged: 4k, vesa, dockport, displayport 1.3, usb 3.1, DisplayPort Alternate Mode

The bilateral symmetry of the Type C plug has already put smiles on many faces, not having to flip the USB connector three times to find the right plug orientation will be a nice treat and steal some thunder from Apple's Lightning.  That is not all that USB 3.1 will be bringing however, 10Gbps of data throughput and up to 100W on a single cable have also been announced as part of the new standards capabilities.  There is something new today as well, support for DisplayPort over USB 3.1 which will perhaps only be available over specialized cables but could become a standard feature. 

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DisplayPort Alternate Mode takes advantage of the nature of USB 3.1 which offers four lanes for traffic to pass through, with a choice of USB data at up to 10Gbps per lane, up to 100W of power, DisplayPort AV at up to 8.1Gbps or at DP 1.2a speeds of 5.4Gbps which is likely the top speed on the first cables released.   For those initial cables you will need all four available lanes to be able to display at 4k resolutions but once the speed is increased to 1.3's 8.1Gbps you should be able to see VESA's promise of 4k video, Superspeed USB data and up to 100 Watts of power over a single cable.  Even when all four lanes are devoted to DisplayPort to run 5k video the cable will still support USB 2.0 speeds thanks yo separate pins dedicated for that function.

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"The new Type C USB connector is causing a lot of excitement, thanks in part to its reversibility (you can plug it in either way up) and high rates of data and power transfer. But there's now another reason to buy into in: DisplayPort support."

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Source: VESA