HDMI Announces USB-C to HDMI Cables for 4K Displays and TVs - MacRumors
Skip to Content

HDMI Announces USB-C to HDMI Cables for 4K Displays and TVs

The licensing group behind the HDMI interface has introduced a new HDMI Alternate Mode that will allow for USB-C devices like the 12-inch MacBook, smartphones, and tablets to connect to HDMI-enabled 4K displays and TVs over a single cable, with no adapters or dongles required.

12-inch-macbook-4K-monitor
The new specification will lead to the release of simple HDMI to USB-C cables that support the full range of HDMI 1.4b features, including 3D, Ethernet, and CEC. Connecting an HDMI-enabled 4K display or TV to a 12-inch MacBook currently requires using Apple's $79 USB-C Digital AV Multiport Adapter.

HDMI-USB-C-cable
Thunderbolt remains the more popular I/O protocol for connecting 4K displays and TVs to Macs, since existing models are unable to drive 4K displays or TVs at 60Hz over HDMI by default. HDMI-enabled 4K displays and TVs connected to a 12-inch MacBook via adapter, for example, only support a 30Hz refresh rate.

In addition to the 12-inch MacBook, Apple is rumored to release updated MacBook Pro and MacBook Air models featuring USB-C ports with Thunderbolt 3 as early as October. Those notebooks would support HDMI to USB-C cables, providing Mac users with another option for connecting 4K displays and TVs.

Popular Stories

iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Apple Business hero

Apple Unveils 'Apple Business' All-in-One Platform

Tuesday March 24, 2026 8:53 am PDT by
Apple today announced Apple Business, a new all-in-one platform that unifies device management, productivity tools, and customer outreach features. The service is designed to be a consolidated replacement for several of Apple's existing business-focused offerings, including Apple Business Essentials, Apple Business Manager, and Apple Business Connect. It provides organizations with a single...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 3, AirPods Pro 2 and AirPods 4

Tuesday March 24, 2026 12:31 pm PDT by
Apple today released new firmware for the AirPods Pro 2, AirPods Pro 3, and the AirPods 4. The firmware has a version number of 8B39, up from 8B34 on the AirPods Pro 3, 8B28 on the AirPods Pro 2, and 8B21 on the AirPods 4. There is no word on what's included in the firmware, but Apple has a support document with limited notes. Most updates are limited to bug fixes and performance...

Top Rated Comments

jmh600cbr Avatar
125 months ago
Hopefully this doesn't lead to a lack of HDMI on the MBP. The reason I love it so much is when I'm at a random place and I can just unplug their BRplayer or random or cable box or android box and just plug in.
Score: 16 Votes (Like | Disagree)
125 months ago
This sounds unequivocally good. Waiting for everyone to explain why it sucks.
Only 30 Hz. Which means, its just another thing thats possible, that no one wants to use.
Score: 15 Votes (Like | Disagree)
125 months ago
This sounds unequivocally good. Waiting for everyone to explain why it sucks.
Score: 12 Votes (Like | Disagree)
125 months ago
This is yet another reason why Lightning should be replaced with USB-C on iPhones/iPads.
Score: 10 Votes (Like | Disagree)
Bkxmnr Avatar
125 months ago
So does the power from the display keep the MacBook charged? Or can you only use the external display for as long as the MacBook stay powered by its battery?
Score: 8 Votes (Like | Disagree)
125 months ago
Oh my! More dongles.... >_<
The is the exact opposite of a dongle. It keeps a dongle from being required.
Score: 7 Votes (Like | Disagree)