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Compact gray USB-C adapter with two HDMI ports

Corn Electronics

Corn Electronics USB-C to Dual HDMI Adapter 4K 60Hz Gray

SKU CH-RZ11-HDJP7

Connects a USB-C device to two HDMI displays at up to 4K 60 Hz on a single screen or 30 Hz across both, with plug-and-play operation on Windows, macOS, Android and Linux

  • Product colorGray
  • Drives two 4K monitors from one USB-C port
  • Single screen at 4K 60 Hz or dual at 4K 30 Hz
  • Works on Windows, macOS, Linux and Android devices
  • Plug-and-play with DP Alt Mode, no drivers needed
  • Thunderbolt 3 compatible for 2015-2019 MacBook models

Dual 4K HDMI output

This USB-C adapter connects a Thunderbolt 3 or USB-C device to two external monitors via HDMI. It is suited for users who need to mirror or extend their desktop onto larger displays. Windows systems support both single-stream and multi-stream transport modes for flexible configurations. Mac OS is limited to mirror mode across both screens.

Resolution and refresh limits

A single connected monitor can run at 3840x2160 at 60 Hz. When both HDMI ports are used simultaneously, each output is limited to 3840x2160 at 30 Hz. The adapter requires the host device to support DisplayPort Alternate Mode over USB-C for video output. No drivers or software installation are needed for operation.

Gray aluminum build with fixed cable

The gray finish matches common laptop aesthetics and the compact housing is designed for portability. A short integrated USB-C cable reduces desk clutter but limits placement flexibility relative to the host port. Two full-size HDMI receptacles accept standard cables without adapters. The unit draws power directly from the host connection.

How it compares

Measured against everything we stock in USB Graphics & Display Adapters, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 63% of the 749 comparable items (median $23.99).

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Specifications

Product
Product colorGray

Questions about this item

Does this adapter let me run two different 4K screens from one USB-C port?

On Windows you can extend two displays at 3840x2160@30Hz each; on macOS both screens mirror at up to 4K 60Hz due to the operating system limit.

What does "4K @60Hz" actually deliver when I plug in two monitors?

A single monitor can run at 3840x2160@60Hz; with two connected the bandwidth splits so each runs at 3840x2160@30Hz.

Which USB-C standard does it need — Thunderbolt 3 or plain USB-C?

It works with any USB-C port that supports DP Alt Mode; Thunderbolt 3 ports also work because they include that mode.

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