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-fast bandwidth

🔗Thunderbolt 3/4/5 compatible

🖥️Supports 8K@60Hz & 4K@240Hz

15.12 OMR

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Description

🚀 Elevate your display game with 8K clarity and lightning-fast USB-C power!

NEXT GEN HDMI 2 1 STANDARD - Unlock ultra-high resolutions and HDR for stunning visuals 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 streaming without lag or loss.
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, immersive experiences on high-refresh-rate monitors.

The Cable Matters 48Gbps USB C to HDMI 2.1 Adapter delivers cutting-edge video performance with support for up to 8K@60Hz and 4K@240Hz resolutions. Compatible with Thunderbolt 3, 4, and 5 ports, it features HDR support and Auto Low Latency Mode for smooth gaming and media playback. Its premium braided cable and aluminum enclosure ensure durability and a sleek aesthetic, making it the ideal adapter for professionals seeking future-proof, high-fidelity connectivity.

Specifications

ASIN	B08MSWMXT4
Best Sellers Rank	#74 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 (858)
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

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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15.12 OMR

Duties & taxes included

In stock

Sold byAmazon OMANDelivered 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 OMAN.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Customer service was outstanding when I had questions about the product.

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