$ 109.99

Two HDMI Displays from a Single Thunderbolt Port

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.(1)

Productivity Partner

Expanded Workspace. Enhanced Workflow.

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.

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.

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.


Mac Compatibility
  • Mac (M1 Pro, M1 Max, and M1 Ultra) support two 4K monitors with one Sonnet adapter
  • M1 Macs are not compatible
  • Mac (Intel®) with two Thunderbolt 3 ports support two 4K monitors with one Sonnet adapter
  • Mac (Intel) with four Thunderbolt 3 ports (except Mac mini) support four 4K monitors with two Sonnet adapters(2)
  • macOS® 10.12.6+
  • macOS Monterey compatible
Windows Compatibility
  • Windows computer with Thunderbolt 4 or Thunderbolt 3 ports(1)
  • Windows 11 or 10
Monitor Compatibility
  • EDID Version 1.4
Application Compatibility
  • Suitable for all applications



Part Number
  • 2-year
Form Factor
  • Display adapter
Bus Interface
  • 40Gbps Thunderbolt
External Connectors
  • Two HDMI
  • Thunderbolt captive cable
  • HDMI 2.0 and HDCP 2.2
Supported Resolutions
  • Up to 3840 x 2160 @ 60 Hz
Dimensions (WxDxH)
  • 2.3 x 3.9 x 0.6 in. (55 x 99 x 16 mm)
  • RoHS 3 (Directive 2015/863)
  • IEC62368-1 and IEC62368-2 Safety
Package Contents
  • Thunderbolt Dual HDMI Adapter (with captive 0.34-meter Thunderbolt cable)
  • Documentation


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