Sonnet’s Thunderbolt™ Dual HDMI® Adapter enables you to work more efficiently with monitors attached to your notebook or all-in-one computer, enabling you to connect two 4K (3840 x 2160) @ 60Hz HDMI displays to a single Thunderbolt 4 or Thunderbolt 3 port on your computer.
Display Expansion Solution for Intel, M1/M2 Pro, M1/M2 Max, M1 Ultra Macs, and Windows Computers
Expand Your Desktop – Connect Two 4K @ 60Hz HDMI Displays
Thunderbolt Certified – Connect via a Thunderbolt Port
Work more efficiently and expand your application desktop space across multiple screens. Whether you need to edit video or code like a pro, open multiple applications on their own screens, crunch spreadsheets in detail, or mirror your notebook’s display on a larger monitor, the Sonnet Thunderbolt Dual HDMI Adapter makes it possible. Connecting the adapter is plug-and-play easy – your computer powers the Sonnet adapter, so there’s no need to connect an additional power supply, and with native macOS® and Windows® support there’s no need to install separate driver software.
Go Big. Go Full Screen.
Enjoy the Web and Videos at a Distance
Even when you’re not using productivity software, your notebook’s screen can constrain your view. Go big — the Sonnet Thunderbolt Dual HDMI Adapter enables you to connect your computer to your large monitor or big screen TV to browse the web and watch videos on YouTube and other content at a distance.
Connects Two 4K Displays to a Single Thunderbolt Port
Enables connection of two 4K HDMI displays to a single Thunderbolt port on your computer.
Automatic Setup. Bus Powered.
Sonnet adapter uses operating system drivers, draws power from Thunderbolt port.
Expands Your Onscreen Work and Play Area
Open multiple applications on different displays, view your work on larger screens, browse the web, and watch videos.
Supports Other Resolutions
Also supports 1080P and other lower resolution displays @ 60Hz.
Use with Thunderbolt Docks
Connects to an open port on a Thunderbolt dock connected to your computer.
Passes audio through the cable connecting your display.
Won't Drain System Resources
Unlike many USB video adapters, the Sonnet Thunderbolt adapter makes no impact on your computer’s performance.
Apple® M1/M2 Pro, M1/M2 Max, and M1 Ultra Compatible
Compatible with M1/M2 Pro, M1/M2 Max, and M1 Ultra Macs. Not compatible with M1/M2 Macs.
Intel® Mac® & Windows Compatible
Compatible with Intel-based Mac and Windows Thunderbolt computers.
Free Lifetime Tech Support
Sonnet was established in Irvine, California in 1986. Since then, we’ve pioneered and brought to market many innovative and award-winning products that enhance the performance and connectivity of Mac, Windows, and other industry-standard computers. Many of our employees have been with the company for more than 20 years. We have a wealth of knowledge about our current and past products. Should you ever need technical support on one of our products, contact us; we’ll be around to help you.
Feast for the Eyes
Four HDMI Displays Over Thunderbolt
Connect four displays to your Intel-based Mac with four Thunderbolt ports (except Mac mini). With two Sonnet Thunderbolt to Dual HDMI adapters connected to your computer, connect two displays to each adapter and configure settings to extend your desktop on the connected displays. And because your computer powers the Sonnet adapters, there’s no need to connect additional power supplies.
Accessory for Thunderbolt Docks
The Perfect Connection Companion
Expand a Thunderbolt dock with two HDMI ports. Connect the Thunderbolt Dual HDMI Adapter to a free Thunderbolt port on the dock and save a port on your computer.
Not Just for 4K Displays
Supports Full HD (1080p) Displays and Audio Out
While the Sonnet Thunderbolt to Dual HDMI Adapter supports two monitors at up to 4K resolutions (3840 x 2160), you can also use it to connect monitors with lower resolutions, like full HD 1080p (1920 x 1080) @ 60Hz — this makes it great for use for different home and work applications. Because audio support is built into the Sonnet adapter, you don’t have to plug in a separate cable to hear sound from connected displays.
Optimal HDMI Video Performance Over Thunderbolt
Compatible with Intel and M1/M2 Pro, M1/M2 Max, M1 Ultra Macs and Windows 11 or 10 Thunderbolt Computers
Sonnet's Thunderbolt Dual HDMI Adapter is ideal for many computers with Thunderbolt ports. Thunderbolt's 40Gbps interface lets you run Ultra HD 4K resolution at 60Hz on both displays at full performance. Need two 4K monitor support with your M1/M2 Mac or PC without Thunderbolt? Check out Sonnet's DisplayLink Dual HDMI Adapter for M1 and M2 Macs.
See the chart below to determine the best Sonnet adapters and display configurations for your computer.
Display Adapters Recommendation
Recommendation for Two 4K 60Hz External Displays
Computers with Thunderbolt 3 ports or Thunderbolt 4 ports (Includes M1 Pro/Max/Ultra, M2 Pro/Max)
See Tech Specs for footnotes. Product specifications and information subject to change without notice. Computer hardware and accessories featured in photos that are not included with product are shown for illustration purposes; items sold separately.