Is this adapter bidirectional? / Can I use it with my host’s HDMI output and my monitor’s USB-C input?

No. This adapter is a unidirectional USB-C to HDMI adapter. It only converts video from USB-C with DP Alt Mode or Thunderbolt 3/4/5 ports (host) to HDMI displays. It does not support HDMI sources like the PS5 or Xbox to USB-C devices.

Does this adapter work with macOS? / Does it support 4K@120Hz, 4K@240Hz, or 8K on my Mac?

This adapter can work with macOS host but is limited to 4K@60Hz on macOS. For 4K@120Hz or 4K@240Hz on Mac models, use the firmware-enhanced macOS version, ASIN B0DCN798Y1 / Model 201488.

How can I achieve 8K@60Hz, 4K@120Hz, or 4K@240Hz with this adapter?

Actual output depends on the host USB-C/Thunderbolt port, GPU, drivers, HDMI 2.1 display, and certified HDMI 2.1 cable. Some TVs may require firmware updates or Enhanced/High-Refresh HDMI mode.

Why is there no video output, flickering, or no signal?

Confirm the USB-C port supports DP Alt Mode, USB4, or Thunderbolt. Use a certified HDMI 2.1 cable, select the correct HDMI input, enable Enhanced/High-Refresh mode if needed, update GPU drivers, and lower the resolution/refresh rate.

Why do I get only 4K@120Hz with Intel GPUs and Acer monitors?

This is a known compatibility limitation with Intel GPU and Acer monitor setup when using this product. With AMD or NVIDIA GPUs, the same monitor can reach 4K@144Hz or higher.

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Cable Matters 48Gbps USB C to HDMI Adapter Supporting 4K 120Hz and 8K HDR - Thunderbolt 3 and Thunderbolt 4 Port Compatible - Maximum Supported Resolution on Any Mac via This Adapter is 4K@60Hz

Product ID: 299579853

Details

Brand
Cable Matters
Colour
Gray
Compatible Devices
Laptop Monitor
Connector Type
HDMI USB Type
Specific Uses For Product
TV PC Monitor

⚡48Gbps ultra-fast bandwidth

🔗Thunderbolt 3 & 4 compatible

🖥️Supports up to 8K@30Hz & 4K@120Hz

EC$363

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Description

🚀 Elevate your display game with Cable Matters — where speed meets stunning clarity!

FUTURE PROOF YOUR SETUP - Harness HDMI 2.1 tech for stunning 8K and 4K 120Hz visuals that keep you ahead of the curve.
PLUG PLAY VERSATILITY - OS-independent design means effortless setup across all your devices—no drivers needed.
PREMIUM DURABILITY STYLE - Braided cable and aluminum enclosure deliver a sleek look and long-lasting performance.
LAG FREE IMMERSIVE EXPERIENCE - Auto Low Latency Mode (ALLM) ensures ultra-smooth gaming and streaming with vibrant HDR colors.
SEAMLESS MULTI DEVICE COMPATIBILITY - Works flawlessly with laptops, tablets, and smartphones featuring USB-C with DP Alt Mode and Thunderbolt ports.

The Cable Matters USB-C to HDMI Adapter leverages HDMI 2.1 technology to deliver blazing 48Gbps bandwidth, supporting up to 8K@30Hz and 4K@120Hz resolutions. Compatible with Thunderbolt 3 and 4 ports, it offers HDR support, Auto Low Latency Mode for gaming, and premium build quality with a braided cable and aluminum housing. Ideal for professionals seeking future-proof, high-performance video connectivity across laptops, tablets, and monitors.

Specifications

ASIN	B08MSWMXT4
Best Sellers Rank	#91,222 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #37 in Thunderbolt Adapters
Brand Name	Cable Matters
Colour	Gray
Compatible Devices	Laptop, Monitor, Tablet
Connector Type	HDMI, USB Type C
Current Rating	3 Amps
Customer Reviews	4.4 4.4 out of 5 stars (823)
Input Voltage	240 Volts
Item Package Quantity	1
Item Weight Unit of Measure	0.02 Kilograms
Manufacturer	Cable Matters
Manufacturer Part Number	201388-GRY
Model Number	201388
Number of Items	1
Number of Ports	1
Power Plug Type	No Plug
Product Finish Type	Matte
Specific Uses For Product	TV, PC, Monitor, Laptop
UPC	818707029640
Unit Count	1.0 Count
Warranty Description	Imported from US, WARRANTY not applicable.
Warranty Type	Limited

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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EC$363

Duties & taxes included

In stock

Sold byAmazon Saint Kitts and NevisDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Kitts and Nevis.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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