WAVLINK USB-C HDMI Splitter — 4-Port 4K/1080p Multi-Display

WAVLINK's 4-port HDMI splitter is a USB-C/USB-A adapter that drives up to four external displays—two at 4K@30Hz and two at 1080p@60Hz—so you can expand your desktop for multitasking, content review, or presentation setups.

Whether you use a modern MacBook, a Windows laptop, or a USB-A desktop, this WAVLINK adapter lets you connect multiple HDMI screens with driver-based support for extended and mirrored layouts. It combines video output and high-speed USB data transfer in one compact hub, adding an optional 5V power input for improved stability during heavy multi-display use. Note: the adapter requires a driver download from wavlink.com before use and may run warm under load.

How many monitors can I run and at what resolutions?

You can drive up to four HDMI monitors at once: two displays at 4K UHD (3840x2160) running at 30Hz, and two displays at 1080p running at 60Hz. This mixed-resolution support is ideal for combining high-resolution reference screens with standard Full HD displays for document windows and messaging apps.

• Up to 2x 4K UHD @ 30Hz
• Up to 2x 1080p @ 60Hz
• Supports extended and mirrored configurations
• Great for spreadsheets, video review, and multiple app windows

Will it work with my laptop—MacBook, Windows, or older USB-A systems?

The WAVLINK adapter supports both USB-C and USB-A hosts and is compatible with a wide range of operating systems, including Windows 10/11, macOS 11–13+, Chrome OS, Ubuntu, Android, and Harmony OS. Mac models with Apple Silicon (M1–M5) and Intel machines are supported, but a driver installation from wavlink.com is required before connecting displays.

• USB-C and USB-A host support with 5Gbps data transfer
• Driver required—download from wavlink.com before first use
• Compatible with modern MacBooks, Windows laptops, and desktops
• Not plug-and-play—ensure the correct driver for your OS

How do I set up display modes like portrait or clamshell?

After installing the WAVLINK driver, your OS display settings let you arrange monitors in extended or mirrored modes and rotate displays for portrait orientation. Clamshell setups (laptop lid closed with external screens) are supported when using external power and the correct display arrangement in system preferences.

• Use OS display settings to rotate or reorder screens
• Supports portrait orientation for vertical layouts
• Clamshell mode works with external power and display settings adjusted
• Useful for coding, vertical document review, or social feeds

What about power, heat, and long-term stability?

The adapter includes an optional USB-C 5V input to improve stability under multi-display workloads; it does not provide PD fast charging. During heavy use with multiple high-resolution outputs the unit can run warm—this is normal, but keep it in a ventilated area to maintain performance.

• Optional 5V power input for added stability
• No PD fast-charge support—power is for display stability only
• May feel warm during intensive multi-monitor sessions
• Place in open space for better thermal dissipation

Who is this for? Professionals and power users who need to expand a laptop or desktop into a multi-display workstation—traders, editors, developers, and designers who mix high-resolution reference screens with additional Full HD monitors will benefit most. It's also a solid choice for presenters and educators who need multiple HDMI outputs from a single USB-C or USB-A port, provided they can install the driver beforehand and accept that the device may run warm during intensive use.