KOZYC

KOZYC USB C to Dual HDMI Adapter 4K@60hz

Name: KOZYC USB C to Dual HDMI Adapter 4K@60hz, Type C to HDMI Splitter Extended Display for MacBook/MacBook Pro Air Dell XPS13/15, Samsung Galaxy S9/S9+
Brand: KOZYC
SKU: B0CG5W614X

Status: KOZYC USB C to Dual HDMI Adapter 4K@60hz: Unavailable on Amazon as of 2026-10-07 04:17 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The KOZYC USB C to Dual HDMI Adapter 4K@60hz: Single HDMI output hits full 4K at 60Hz (3840x2160); main trade-off: both HDMI ports active drops the ceiling to 4K@30Hz.

Unavailable on Amazon as of 2026-10-07 04:17 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: WAVLINK USB 3.0 or USB C to Dual HDMI 4K@60hz… — $69.99 on Amazon as of 2026-10-06 22:27 UTC (price may vary).

View Current Price — $69.99

Similar: WAVLINK USB 3.0 or USB-C to Quad HDMI Splitter… — $103.94 on Amazon as of 2026-10-06 22:27 UTC (price may vary).

View Current Price — $103.94

Similar: USB C to HDMI Adapter【4K@60HZ】 — $8.98 on Amazon as of 2026-10-07 04:27 UTC (price may vary).

View Current Price — $8.98

Original listing (currently unavailable) → Compare to similar accessories

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ Single HDMI output hits full 4K at 60Hz (3840x2160)
✓ Bus-powered and driver-free; no adapter brick to carry
✓ Windows supports all four modes: AAA, ABB, ABA, ABC
✓ 2-year warranty plus lifetime technical support included

Cons

✗ Both HDMI ports active drops the ceiling to 4K@30Hz
✗ True MST extended desktop (ABC mode) is Windows-only
✗ Android is capped at AAA mirror mode, no extended desktop
✗ Requires Thunderbolt 3 or DP Alt Mode; not every USB-C port qualifies

Manufacturer description

The KOZYC USB C to Dual HDMI Adapter turns a single Type-C port into two HDMI outputs, so you can run an extended or mirrored desktop without a full docking station. Drive one display at 4K@60Hz (3840x2160), or push both at once at up to 4K@30Hz, with backward-compatible 60Hz output at 2K and 1080p. It is bus-powered and driver-free: plug it into a MacBook, MacBook Pro, MacBook Air, Dell XPS 13/15, HP, LG, or Samsung Galaxy S9/S9+ and it works, provided that port supports Thunderbolt 3 or DisplayPort Alt Mode. Display-mode support varies by platform, and this is the detail that decides…

SpecPicks Verdict

SpecPicks scored KOZYC USB C to Dual HDMI Adapter 4K@60hz using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. KOZYC's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Can I run two extended displays from my MacBook with this?

Partially. macOS supports AAA and ABB modes but not MST ABC mode, so you cannot drive two fully independent extended desktops on a Mac. Full ABC extended-display support is Windows-only.

What resolution do I get with both HDMI ports in use?

With one HDMI port active, up to 4K@60Hz (3840x2160). With both ports active, the maximum drops to 4K@30Hz. 2K and 1080p remain backward compatible at 60Hz.

Does it need drivers or an external power supply?

Neither. The KOZYC adapter is plug and play with no driver installation and no external power supply required.

Will it work with any USB-C laptop port?

No. Your USB-C port must support Thunderbolt 3 or DisplayPort Alt Mode (DP ALT mode). Ports that are data-only will not output video. Confirmed devices include MacBook, MacBook Pro, Dell XPS, HP, LG, and Samsung Galaxy.

What comes in the box and is there a warranty?

You get one KOZYC USB-C 3.0 to HDMI dual display adapter and one user manual, backed by a 2-year warranty and lifetime technical support. HDMI cables are not included; use HDMI 2.0 or better for 4K.

Key Features

【USB 3.0 to Dual HDMI Adapter 】KOZYC USB C to Dual HDMI Adapter is able to connect a USB C port to two HDMI displays. Note: Android system only supports AAA mode(mirror mode); macOS supports AAA, and ABB mode (does not support MST ABC mode); Windows OS supports AAA, ABB, ABA, and ABC mode.
【4k 60Hz】When a single HDMI port is working, the resolution is up to 4K@60Hz (3840X2160P@60Hz). When both HDMI ports are working, the maximum supported resolution is limited to 4K@30Hz.This USB C to HDMI adapter is backward compatible with 60Hz for resolutions of 2K/1080P. Please note: If you want to get a 4k resolution, please make sure your device supports 4k and uses a HDMI cable 2.0 or better
【Plug and Play】No external power supply is required for this USB C to HDMI Adapter, just plug and play, and no need for any driver. Note: NOT for all USB-C port laptops, Make sure your laptop or PC supports ” Thunderbolt 3” or “displayport output mode（DP ALT mode）
【Broad Compatibility】This USB C HDMI Adapter is compatible with Linux, Windows, Mac OS, & Android systems, with compatible Thunderbolt 3 and DP 1.4 alt mode. Support: MacBook/ MacBook Pro, Dell XPS, LG, HP, Samsung Galaxy, etc.
【What You Get】KOZYC USB-C 3.0 to HDMI Dual Display Adapter x 1, User Manual x1 with a hassle-free 2-year warranty and lifetime technical support. Feel free to reach our friendly customer service if you have any questions.

Full Specifications

Brand	KOZYC
Color	silver
Unit Count	1.0 Count
Cable Length	2.7 Inches
Connectivity	USB-C
Model Number	K2AD12UH
Compatibility	PC, Android, Mac, Linux
Mfr Part Number	K2AD12UH
Number of Ports	2
Special Feature	Play, Plug
Total Usb Ports	2
Compatible Devices	Laptops
Enclosure Material	Aluminum
Hardware Interface	HDMI, Thunderbolt, USB Type C
Additional Features	Play, Plug
Warranty Description	2 Year Limited Warranty
Global Trade Identification Number	04897131960077
Full listing title	KOZYC USB C to Dual HDMI Adapter 4K@60hz, Type C to HDMI Splitter Extended Display for MacBook/MacBook Pro Air Dell XPS13/15, Samsung Galaxy S9/S9+ [MST Mode (Extended displays) Only for Win OS]

Ready to buy?

Amazon shows no buyable offer for KOZYC USB C to Dual HDMI Adapter 4K@60hz at the last check. A similar in-stock product is WAVLINK USB 3.0 or USB C to Dual HDMI 4K@60hz…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $69.99