Connect Two 4K 120Hz (or 8K 60Hz + 4K 60Hz) HDMI Displays as Supported by Your Computer
Two HDMI Displays from a Single Thunderbolt Port Do your ideas and workflow need room to grow beyond a single screen? Sonnet Thunderbolt Dual 4K HDMI 2.1 Adapter makes it possible for you to work more efficiently with your laptop, compact desktop or all-in-one computer, enabling you to connect two 4K 120Hz (or 8K 60Hz + 4K 60Hz) monitors as supported by your Windows computer, or two 4K 60Hz to Apple® M series Pro, Max, or Ultra Macs.
Supports 8K + 4K Displays with Windows Computers This Sonnet adapter can also support one 8K 60Hz display plus one 4K 60Hz display — ideal for when you need to connect your computer to the largest displays possible! Note that 8K monitor support under Windows depends on the graphics capability of your Windows computer.
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, or crunch spreadsheets in detail, Thunderbolt Dual 4K HDMI 2.1 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 Window support there’s no need to install separate driver software.
Enjoy the Web and Videos at a Distance Even when you’re not working hard, your laptop’s screen can constrain your view. Go much bigger — Thunderbolt Dual 4K HDMI 2.1 Adapter enables you to connect your computer to your big screen TV or large monitor to share videos and other content.
Key Features
Connects Two 4K 120Hz Displays to a Single Thunderbolt Port Enables connection of two 4K 120Hz (Windows) or two 4K 60Hz (Mac) HDMI displays to a single Thunderbolt port on your computer.
Expands Your Onscreen Work and Play Area Open multiple applications on different displays, view your work on larger screens, watch videos, or extend your gaming space.
8K 60Hz or Dual 4K 120Hz Display Support Higher resolution and faster refresh rate supported with newer Windows computers.
Supports Other Resolutions Also supports 1080p and other lower resolution displays @ 120Hz.
Automatic Setup. Bus Powered. Sonnet adapter uses operating system drivers, draws power from Thunderbolt port.
Supports HDMI Audio and HDCP Passes audio through the cable connecting your display and plays protected streaming video.
Supercharged Video Refresh Use your computer’s GPU for the best performance for all applications.
Apple M Series Pro/Max/Ultra Compatible Compatible with your M series Pro, Max or Ultra Mac computer.
Intel and AMD Compatible Compatible with Intel-based Windows and Mac Thunderbolt computers and AMD USB4 laptops.
Compatibility Mac Compatibility
Mac (M series Pro/Max/Ultra and M4) Mac Studio additionally supports four or six (M2 Ultra) displays with two or three Sonnet Thunderbolt Dual 4K HDMI 2.1 Adapters, respectively Mac (Intel) with Thunderbolt 3 ports Mac (Intel) with four Thunderbolt 3 ports (except Mac mini) additionally supports four 4K monitors with two Sonnet adapters Basic M1/M2/M3 series Macs are not compatible (see Sonnet's DisplayLink adapters for dual monitor support) macOS 14+ macOS Tahoe compatible
Windows Compatibility
Windows computer with Thunderbolt 5 or 4 ports; or USB4 port(1) Windows 11
Monitor Compatibility
EDID Version 1.4
Application Compatibility
Suitable for all applications
Hardware Part Number TB3-DHDMI-21
Warranty 2-year
Form Factor Display adapter
Bus Interface 40Gbps Thunderbolt
External Connectors Two HDMI Thunderbolt captive cable
Standards HDMI 2.1 HDCP 2.2
Maximum Resolutions macOS: Two 4K (3840 x 2160 @ 60Hz)(2) Windows: Two 4K (3840 x 2160 @ 120Hz); or one 8K (7680 x 4320 @ 60Hz)
Dimensions (WxDxH) 2.4 x 4.4 x 0.6 in. (60 x 113 x 15 mm)
Compliance RoHS 3 (Directive 2015/863) IEC62368-1 and IEC62368-2 Safety
What's In The Box Thunderbolt Dual 4K HDMI 2.1 Adapter (with captive 7.9-inch [20cm] Thunderbolt cable) Documentation
