4K HDMI KVM Multiviewer Quad-View with Audio - Seamless 4x1 Switching

Our review of this 4K HDMI KVM Multiviewer finds it best for small offices, content creators, and anyone who needs to share one 4K monitor, keyboard and mouse between four computers while monitoring all sources at once. The single biggest reason to buy is its combination of quad-view multiviewer and KVM switching in one box, which lets a user either view four HDMI sources simultaneously or control them individually with fast switching and borderless mouse-crossing. It is a practical, space-saving tool when 4K@30Hz video and simple USB HID sharing are the priority.

Key Features

• 4-in-1 Multiview and KVM: Acts as a 4x1 HDMI KVM switch and a quad-view multiviewer so four computers can share one monitor and peripherals.
• 4K@30Hz support: Handles video resolutions up to 4K@30Hz while remaining backward compatible with lower resolutions for varied source devices.
• Multiple switching methods: Offers front-panel button, IR remote, keyboard hotkey and mouse-crossing for flexible and fast switching between sources.
• Borderless mouse-crossing and PIP: In quad-view mode users get borderless mouse-crossing for intuitive control and PIP/POP modes for focused monitoring.
• Audio passthrough: Supports simultaneous HDMI video and 3.5mm audio output so sound can be routed while switching video sources.
• Built-in USB hub: Includes two USB 2.0 hub ports intended for keyboard and mouse sharing with connected computers.

Who It's For

This unit is ideal for IT administrators, home lab users and content producers who need to monitor multiple PCs on a single 4K display and occasionally control any of them without swapping cables. The combined multiview and KVM functionality saves desk space and reduces clutter compared with separate devices.

It is less suitable for users who need 4K at 60Hz, professional color grading at higher refresh rates, or heavy USB peripheral bandwidth since the hub uses USB 2.0. If you need gaming-grade refresh rates or high-speed USB device sharing, look for a device rated beyond 4K@30Hz and with USB 3.x support.

Pros & Cons

Pros

• Combines quad-view multiviewer and KVM switching so four computers can be monitored and controlled from one desk.
• Multiple seamless switching options including front button, IR remote, keyboard hotkey and mouse-crossing for quick access.
• PIP, POP and 2x2 display modes provide flexible viewing layouts for different workflows.
• Includes USB cables, IR remote and power adapter in the package for quick setup.

Cons

• Limited to 4K@30Hz, which may not satisfy users who require 60Hz performance.
• USB hub is USB 2.0, so high-speed USB peripherals will be limited by bandwidth.

Specifications

Product type	4x1 HDMI KVM Multiviewer
Max video resolution	4K@30Hz
Display modes	Single, PIP, 2x2, horizontal POP, vertical POP, vertical 1x3
Audio	HDMI video and 3.5mm audio output
USB	2 x USB 2.0 hub for keyboard and mouse (includes 4 USB cables)
Switching methods	Front button, IR remote, keyboard hotkey, mouse-crossing
Package includes	Unit, 4 USB cables, IR remote, DC12V 1A power adapter, user manual

Our Verdict

The 4K HDMI KVM Multiviewer is a practical, cost-effective solution for users who need to monitor and control up to four computers from one 4K display at up to 30Hz. Its combined multiview and KVM features, multiple switching options and PIP/POP layouts make it a strong choice for productivity and monitoring setups, though those needing 60Hz or faster USB will want a higher-spec alternative.

Frequently Asked Questions

Can this unit display all four inputs at once?
Yes - the multiviewer supports a quad 2x2 layout and other modes so all four HDMI sources can be shown simultaneously.

Does it pass audio along with video?
Yes - it supports HDMI video output and a separate 3.5mm audio output for simultaneous audio routing.

Can I use a single keyboard and mouse across all connected computers?
Yes - the built-in USB 2.0 hub is intended for sharing a keyboard and mouse, with switching via hotkey, remote, button or mouse-crossing.