SplitExtend 4K HDMI Splitter Extended Display for Dual Monitor

In this review of the SplitExtend 4K HDMI Splitter Extended Display adapter, the bottom line is clear: it is a practical productivity tool for anyone who needs three independent screens from a single computer connection. The adapter's biggest selling point is its ability to drive a laptop screen plus two external monitors with full 4K@60Hz on the primary output and 2K@60Hz on both extended outputs, making it ideal for multitasking work. The review focuses on real-world setup, compatibility, and the tradeoffs users should expect when choosing a DisplayLink-based solution.

Key Features

• SPLITEXTEND: Allows a laptop or desktop to display three separate screens, turning one video port into a productive multi-monitor workspace.
• High Resolution Outputs: Provides full 4K@60Hz on the main HDMI and up to 2K@60Hz on the two extended screens for crisp text and smooth cursor movement.
• 2-in-1 Cable: Works with USB-C, USB-A 3.1, Thunderbolt 3/4 and USB 4 hosts so it can connect to modern laptops and older USB-equipped systems.
• PD 3.0 90W Charging: Supplies up to 90W pass-through power to charge a laptop while driving multiple external displays, reducing cable clutter.
• DisplayLink Compatibility: Uses a DisplayLink solution with drivers for Windows and macOS (10.14+), and auto-driver install on Chrome OS for broad system support.
• Warranty and Support: Includes a 1 year warranty and lifetime support from the manufacturer, useful for business users who need reliability.

Who It's For

This adapter is best for office workers, remote professionals, and anyone who needs more screen real estate for email, spreadsheets, web research, and multiple apps at once. Users with Apple M1/M2/M3 MacBooks who need true extended displays will find it particularly useful because it enables the extended display functionality those machines otherwise restrict.

It is not aimed at GPU-heavy users: gamers, video editors, and designers who rely on hardware-accelerated graphics or require HDCP-protected playback should look elsewhere, since the device is not recommended for graphics-intensive work and does not support protected playback on streaming services.

Pros & Cons

Pros

• Enables three independent screens for a substantial productivity boost.
• High resolution support with 4K@60Hz and 2K@60Hz where it matters for desktop work.
• Broad host connectivity with USB-C and USB-A plus 90W PD charging to keep a laptop powered.
• Positive user feedback on ease of setup and overall build quality.

Cons

• Requires DisplayLink driver installation on macOS and Windows, adding a setup step.
• Not suitable for gaming or playback of HDCP-protected streaming content.

Specifications

Our Verdict

The SplitExtend 4K HDMI Splitter Extended Display is a sensible value for anyone wanting a three-screen setup without replacing a laptop or docking station. It delivers reliable extended displays, flexible host connections, and useful 90W charging for sustained productivity. Buyers should accept the DisplayLink driver step and avoid it for gaming or protected-streaming needs, but for day-to-day office work it offers a strong, practical upgrade.

Frequently Asked Questions

Does this work with M1 and M2 Macs?
Yes, it enables extended displays on Apple M1/M2/M3 MacBooks provided macOS is 10.14 or later and the DisplayLink driver is installed.

Is a driver required?
Yes, DisplayLink drivers are required for macOS and Windows; Chrome OS installs drivers automatically.

Can I watch Netflix or other protected content?
No, the adapter does not support playback of HDCP-protected streaming content on services like Netflix or Hulu.