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Gray rectangular adapter with one USB C port and three HDMI ports

Corn Electronics

Corn Electronics USB C to 3 HDMI Adapter Gray 3 Port 4K@60Hz

SKU CH-VK06-S4GM2

Connects a USB-C device to three HDMI displays, supporting 4K at 60 Hz on one or two screens and 4K at 30 Hz on the third, with extended mode on Windows and mirror mode on macOS

  • Port count3
  • Input ports1 × USB C
  • Output ports3 × HDMI
  • Maximum supported resolutions4K@60 Hz
  • Product typeUSB C to 3 HDMI Adapter
  • Product colorGray
  • Connect three monitors simultaneously via one USB-C port
  • One or two displays run at 4K@60Hz for sharp visuals
  • Three active displays split to one 4K@60Hz and two 4K@30Hz
  • Windows enables both mirror and extended desktop modes
  • Mac OS supports mirror mode only for multi-screen setup

USB C to 3 HDMI Adapter

This adapter converts a single USB C signal into three HDMI outputs for simultaneous multi-monitor use. It targets office and home-office workers who need extended or mirrored screens from one port. Windows users gain both mirror and extended modes, while Mac OS users are limited to mirror mode only. No driver installation is required for operation.

Resolution headroom and limits

One or two active ports each deliver 4K at 60 Hz for sharp visuals. With three ports active, one maintains 4K at 60 Hz while the other two drop to 4K at 30 Hz. The bandwidth split means triple-head setups lose high refresh on two displays. Buyers needing 60 Hz on three screens simultaneously will not be served by this device.

USB C interface constraints

The adapter relies on the host USB C port to supply video bandwidth and power for three HDMI streams. Performance scales with the host controller capability, so older or bandwidth-limited ports may reduce achievable resolutions. Mac OS cannot extend the desktop across the three outputs regardless of host hardware. Plug-and-play simplicity applies only where the host natively supports multi-stream transport.

How it compares

Measured against everything we stock in HDMI & Video Splitters, at today’s prices. Recalculated every night.

Price $52.99
Pricier than about 90% of the 1,127 comparable items (median $20.99).

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Specifications

Product
Brand nameCorn
Product typeUSB C to 3 HDMI Adapter
Product colorGray
Display
Maximum supported resolutions4K@60 Hz
Ports & slots
Port count3
Input ports1 × USB C
Output ports3 × HDMI

Questions about this item

Will this adapter work with my older laptop that only has a USB-C port?

It requires a USB-C port that carries DisplayPort Alternate Mode video; most laptops from 2015 onward with USB-C support this, but check your device specifications.

How can I confirm all three monitors are running at the correct refresh rates?

Open display settings on Windows or System Settings on macOS; one screen should show 4K at 60 Hz and the other two 4K at 30 Hz when all three are active.

Does the package include HDMI cables or do I need to buy them separately?

Only the adapter is supplied; you will need three HDMI cables to connect your monitors.

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