4K120Hz USB C KVM Switch Dual Monitor Docking Station - 2 Computers

In this review the 4K120Hz USB C KVM Switch is judged as a purpose-built solution for users who need to share two DisplayPort monitors, peripherals and a 1G Ethernet connection between two laptops. The bottom line: it is best for professionals or power users with Thunderbolt 3 or higher laptops who want high-refresh 4K video and a single, tethered workspace; its biggest advantage is the ability to deliver up to 4K120Hz across dual displays while sharing USB devices and SD cards, but it will not charge laptops and Mac OS users cannot extend displays.

Key Features

• Dual monitor support: Shares two DisplayPort monitors between two computers to create a single dual-monitor workstation without replugging cables.
• High refresh video: Supports up to 4K at 120Hz and is downward compatible with 4K60Hz and 1080p for smooth motion in games and video work.
• Thunderbolt requirement: Requires each laptop to have a Thunderbolt 3 or higher USB C port to carry display and data signals reliably.
• USB 3.2 data ports: Includes USB 3.2 ports and a USB C data port for 10Gbps transfers, useful for external drives and fast file copy workflows.
• Integrated card readers and Ethernet: Built-in SD and microSD slots and a 1G Ethernet port let you import media and use wired networking without extra adapters.
• External switch button: Adds an extended, desktop-mounted switch for easier switching when the main unit is stowed in a cable-managed area.

Who It's For

This KVM switch is aimed at users who run two laptops with DisplayPort-capable monitors and strong USB C ports that support Thunderbolt 3/4/5. Content creators, developers and multi-tasking professionals who need high refresh rates and the convenience of shared peripherals will appreciate the combined video, data and network features.

It is not a good choice for users whose laptops lack Thunderbolt support, for setups that rely on HDMI-to-DP or legacy VGA/DVI adapters, or for Macbook users who require extended desktop across two different screens since Mac OS is limited to mirrored output on this device.

Pros & Cons

Pros

• Delivers high-bandwidth dual-display output up to 4K120Hz for fluid video and gaming.
• Combines USB 3.2 data, SD/microSD readers and 1G Ethernet in one dock to reduce clutter.
• External switch button and solid power input help maintain stable connections during long sessions.

Cons

• USB C input cannot charge laptops (no PD); a separate power source is required.
• Mac OS users are limited to mirror/copy mode and cannot extend two different displays.

Specifications

Brand	FQuanmap
Video outputs	Dual DisplayPort up to 4K120Hz (downward compatible)
Computer inputs	Two USB C (Thunderbolt 3/4/5 required)
USB ports	USB 3.2 ports and one USB C DATA port (up to 10Gbps)
Card readers	SD and MicroSD slots
Ethernet	1G (1000Mbps)
Power	DC 12V / 1.5A (required for stable operation)

Our Verdict

The FQuanmap 4K120Hz USB C KVM Switch is a practical, high-performance docking option for dual-laptop setups that already meet the Thunderbolt and DisplayPort requirements. It offers excellent value for users who need high refresh dual-display support, fast USB data and integrated card readers, but potential buyers must accept that it does not provide laptop charging and Mac OS cannot extend across two distinct screens.

Frequently Asked Questions

Does this unit charge a laptop?
No. The USB C input is not PD capable and cannot reverse charge a laptop; use the laptop's own power adapter.

Can Macbooks use extended dual displays?
No. Due to technical limitations Mac OS only supports mirrored output on this device; Windows supports extended SST/MST modes.

What ports are required on each computer?
Each computer should have at least one Thunderbolt 3 or higher USB C port and one DisplayPort; HDMI-to-DP or passive adapters are not recommended.