*Display modes beyond require Display Stream Compression, a feature of DisplayPort v1.4 and up, and may additionally require DP8K certified cables for some high-bandwidth modes. HDMI Alt-Mode supports these HDMI-only features where DisplayPort Alt-Mode with a HDMI adapter does not. HDMI Alt Mode currently offers HDMI v1.4b connectivity with support for 4K, ARC, HEC, CEC, Deep Color and a few other HDMI-specific features. Additionally, DisplayPort Alt-Mode can be used with DisplayPort, HDMI, DVI or VGA adapters for extended support to other monitor types. Audio is usually also supported as a part of the protocol for screens with built-in speakers.
#DP ALT MODE DRIVER FOR MAC 1080P#
USB-C Alternate Mode to a HDMI or DisplayPort Monitor offers Video and Audio only.ĭisplayPort Alt-Mode offers DP v1.2, v1.4 or v2.0 connectivity (depending on the hardware) for video connections anywhere from Full HD 1080p up to over USB-C. For example, it could deliver two 4K displays, USB 3.1 and Ethernet simultaneously over a single Thunderbolt USB-C cable when using compatible devices.
Thunderbolt Alt-Mode offers power, data, display, external graphics, Ethernet and USB all at the same time through a dynamically allocated link that can handle up to 40Gbps (but only on a 50cm cable). This connection can additionally offer USB-C Power Delivery and USB Hub (downstream) ports at the same time to keep your laptop/phone charging and your peripherals connected. Primarily, USB-C Alternate Modes provide single-cable connection to monitors and can offer up to video & audio directly to a USB-C enabled display. USB-C Alternate Mode to a USB-C Monitor may offer Video, Audio, USB and Power Delivery. Still, frustratingly, not all USB-C phones have Alt-Mode support. Qualcomm added Alt-Mode directly into their system-on-a-chip Snapdragon 835 in 2017, greatly expanding the number of devices which could offer video out of the USB-C socket. Not all motherboards or laptops support Thunderbolt 3, even if their CPU does.įor mobile phones, manufacturers originally required separate controllers to implement Alt-Mode support, and frequently didn't (except on high-end devices). These were followed up in 2018 by Titan Ridge, which improved performance and brought compatibility up to DisplayPort 1.4 spec. Instead, HDMI compatibility over USB-C is generally offered via DisplayPort or Thunderbolt 3 Alt-Modes using adapters.įor computers, Intel released Alpine Ridge controllers in 2015 which were the first Thunderbolt 3 chipsets integrated into CPUs and offered DisplayPort 1.2 spec. Our research turned up no consumer hardware that supports HDMI Alt-Mode by name. Of these five, the top three are the most important to regular consumers, but despite its ubiquity on televisions, HDMI Alternate Mode is a specification without an implementation (as far as we can tell).
If a device supports a USB Type-C Alt-Mode, it will probably offer video out from a USB-C socket.Īt the time of writing, USB Type-C has five Alternate Mode Partners, three of which should be familiar to most computer users, and only two of which we've been able to find 'in the wild': This packetized data could instead be a video signal such as HDMI or DisplayPort.
USB itself carries packetized data which natively supports things like file transfers and keyboard activity. USB-C Alternate Modes (or Alt-Modes) are optional features that hardware manufacturers can implement into their devices to support a wider range of data protocols for direct connection to peripherals (usually displays) without needing active adapters.
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