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 2.1 Adapter, 8K@60Hz | Unidirectional, 4K@240Hz HDR, Thunderbolt 5/4 Compatible, macOS Supports Up to 4K@60Hz

Product ID: 296169203

Details

Brand
Cable Matters
Colour
Gray
Compatible devices
Laptop Monitor
Connector type
USB Type C
Specific uses for product
TV PC Monitor

⚡48Gbps ultra-fast bandwidth

🔗Thunderbolt 4/5 & USB-C versatile compatibility

🖥️8K@60Hz & 4K@240Hz stunning resolution

₹ 7027

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Sold byAmazon IndiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your display game with 8K clarity and Thunderbolt speed!

PREMIUM DURABILITY - Braided cable and aluminum housing ensure long-lasting, stylish performance that stands out on your desk.
BROAD DEVICE SUPPORT - Works flawlessly with top-tier laptops, GPUs, and displays including Intel Evo, Nvidia RTX 3000, and AMD RX6000 series.
FUTURE PROOF VISUALS - Experience breathtaking 8K@60Hz and ultra-smooth 4K@240Hz HDR for next-level clarity and color.
SEAMLESS THUNDERBOLT POWER - Plug into Thunderbolt 4/5 or USB-C ports with guaranteed compatibility and zero lag.
LAG FREE GAMING STREAMING - Auto Low Latency Mode (ALLM) delivers ultra-responsive visuals and immersive surround sound.

The Cable Matters USB-C to HDMI 2.1 Adapter delivers ultra-high bandwidth of 48Gbps, supporting stunning 8K@60Hz and 4K@240Hz HDR video output. Compatible with Thunderbolt 4/5 and USB-C devices, it features a durable braided cable and aluminum enclosure for premium build quality. Ideal for professionals and gamers seeking future-proof, lag-free, and vibrant visual experiences across a wide range of modern laptops, GPUs, and monitors.

Specifications

ASIN	B08MSWMXT4
Best Sellers Rank	14,592 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 472 in Adapters
Brand Name	Cable Matters
Colour	Gray
Compatible Devices	Laptop, Monitor, Television, Desktop
Connector Type	USB Type C
Country of Origin	China
Current Rating	3 Amps
Customer Reviews	4.4 4.4 out of 5 stars (830)
Item Weight	0.02 Kilograms
Manufacturer	Cable Matters
Manufacturer Part Number	201388-GRY
Model Number	201388
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Product Finish Type	Metallic
Specific Uses For Product	TV, PC, Monitor, Laptop
UPC	818707029640
Unit Count	1.0 count
Warranty Type	Limited

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