Is this adapter bidirectional?

No. It only coverts 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 PS5 or Xbox to USB-C devices.

Does this adapter work with macOS?

Yes, but macOS systems are limited to 4K@60Hz output over USB-C/Thunderbolt, regardless of the display’s capabilities.

Why do I experience flickering or no signal?

Use a short certified HDMI 2.1 cable and confirm HDMI 2.1 mode is enabled on your display. Try lowering resolution or refresh rate. Search “Cable Matters 48Gbps Adapter Troubleshooting” for further instructions.

Why am I not getting 8K or 4K 240Hz?

It require a GPU that supports 8K or 4K240Hz over USB-C (RTX 20/30/40, RX 6000/7000, Intel 11th/12th Gen or newer), an HDMI 2.1 display, and a certified HDMI 2.1 cable. Enable HDMI 2.1 mode on your display and drivers are up to date.

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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Cable Matters 48Gbps Unidirectional USB C to HDMI 2.1 Adapter, Supports 8K 60Hz / 4K 240Hz HDR, Thunderbolt 4 to HDMI2.1, HDMI 2.1 to USB C Adapter, Thunderbolt 5 Compatible - up to 4K@60Hz for macOS

Product ID: 268273440

Details

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

⚡48Gbps blazing bandwidth

🎮4K@240Hz ultra-smooth refresh

🖥️8K@60Hz ultra HD clarity

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15.11 OMR

Duties & taxes included

In stock

Sold byAmazon OMANDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your visuals — don’t just watch, experience every pixel!

FUTURE PROOF YOUR SETUP - Certified HDMI 2.1 & Thunderbolt 5 ready for next-gen devices
UNIVERSAL COMPATIBILITY - Works flawlessly with latest Nvidia RTX, AMD RX, Intel Evo & macOS (4K@60Hz)
PREMIUM DURABILITY STYLE - Braided cable with metal connectors and aluminum housing for lasting elegance
LAG FREE GAMING STREAMING - Auto Low Latency Mode (ALLM) ensures seamless, immersive experiences
STUNNING VISUALS ZERO COMPROMISE - Supports breathtaking 8K 60Hz and ultra-fluid 4K 240Hz HDR displays

The Cable Matters USB C to HDMI 2.1 Adapter delivers ultra-high bandwidth of 48Gbps, enabling stunning 8K resolution at 60Hz and ultra-smooth 4K at 240Hz HDR output. Compatible with Thunderbolt 3, 4, and 5, it supports the latest GPUs and laptops, including Nvidia RTX 3000/4000 series, AMD RX 6000/7000 series, and Intel 11th Gen+ Iris Xe graphics. Designed with premium braided cables and metal connectors, it ensures durability and a sleek look while providing lag-free gaming with Auto Low Latency Mode. macOS users can enjoy up to 4K@60Hz, with firmware upgrades available for higher refresh rates.

Specifications

ASIN	B08MSWMXT4
Best Sellers Rank	#70 in Thunderbolt Cables
Brand	Cable Matters
Color	Gray
Compatible Devices	Laptop, Projector, Television
Connector Type	USB Type C
Current Rating	3 Amps
Customer Reviews	4.2 4.2 out of 5 stars (856)
Finish	Metallic
Item Weight	0.02 Kilograms
Manufacturer	Cable Matters
Mfr Part Number	201388-GRY
Model Number	201388
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	TV, PC, Monitor, Laptop
UPC	818707029640
Unit Count	1.0 Count
Warranty Type	Limited

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