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 Unidirectional USB C to HDMI 2.1 Adapter

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 ultra-high bandwidth

🔗Thunderbolt 3/4/5 compatible

🖥️Supports 8K@60Hz & 4K@240Hz

HK$336

Duties & taxes included

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Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your display game with 8K clarity and pro-grade speed!

NEXT GEN HDMI 2 1 STANDARD - Unlock stunning HDR colors and lifelike surround sound on compatible displays.
PREMIUM DURABILITY DESIGN - Braided cable and aluminum housing ensure longevity and a sleek, professional look.
BLAZING FAST 48 GBPS TRANSFER - Experience seamless 8K and 4K video with ultra-high bandwidth for crystal-clear visuals.
UNIVERSAL THUNDERBOLT COMPATIBILITY - Works flawlessly with Thunderbolt 3, 4, and 5 devices for future-proof connectivity.
OPTIMIZED FOR PRO LEVEL GAMING MEDIA - Auto Low Latency Mode (ALLM) delivers lag-free performance for immersive experiences.

The Cable Matters 48Gbps USB-C to HDMI 2.1 adapter delivers ultra-high-definition video up to 8K@60Hz or 4K@240Hz on compatible devices. Featuring the latest HDMI 2.1 standard, HDR support, and broad Thunderbolt compatibility, it ensures premium visual and audio performance. Its durable braided cable and metal enclosure provide a sleek, long-lasting solution for professionals demanding top-tier connectivity.

Specifications

ASIN	B08MSWMXT4
Best Sellers Rank	#60 in Thunderbolt Cables
Brand	Cable Matters
Color	Gray
Compatible Devices	Laptop, Projector, Television
Connector Type	USB Type C
Current Rating	3 A
Customer Reviews	4.3 4.3 out of 5 stars (859)
Finish	Metallic
Item Weight	0.02 kg
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
Specific Uses For Product	TV, PC, Monitor, Laptop
UPC	818707029640
Unit Count	1 Count
Warranty Type	Limited

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How is product pricing calculated?+

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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HK$336

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered 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 Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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