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

iPhone 18 Pro Rumored Colors

What's Coming in September: New iPhones, Apple Watches and More

Thursday August 13, 2026 4:20 pm PDT by
Apple will introduce at least five new devices at its iPhone-centric event next month, and it's also possible we'll get devices waiting on Siri AI like the Apple TV. iPhone 18 Pro The iPhone 18 Pro is going to look like the iPhone 17 Pro, but with a smaller Dynamic Island. It's getting some internal updates, including a new Wide camera with a variable aperture for more control over lighting ...
iPhone 17 One Year Later Thumb 1

Should You Buy an iPhone 17 Now or Wait for iPhone 18?

Friday August 14, 2026 12:15 pm PDT by
For the first time since Apple started selling standard and "Pro" iPhones, we're not going to get an entry-level iPhone model this fall. Apple doesn't plan to release an iPhone 18 in September, and will only launch the iPhone 18 Pro, iPhone 18 Pro Max, and foldable iPhone Ultra. The lower-cost iPhone 18 won't come out until spring 2027. Subscribe to the MacRumors YouTube channel for more ...
Everything New Your iPhone Can Do on iOS 27 Feature 1

30 New Things Your iPhone Can Do in iOS 27

Friday August 14, 2026 6:24 am PDT by
Apple will release iOS 27 in September, and despite the company's focus this year on refining its flagship operating system and nixing bugs, there are still many additional features on the way, not least of which is Apple's new context-aware Siri, re-tooled for the generative AI era. This year's major iPhone software update isn't all about AI, though, as the following feature list...

Top Rated Comments

jmh600cbr Avatar
130 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)
130 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)
130 months ago
This sounds unequivocally good. Waiting for everyone to explain why it sucks.
Score: 12 Votes (Like | Disagree)
130 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
130 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)
130 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)