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

Worked exactly as described with 5120x 1440 on the odyssey g9 ultra wide. Via the micro hdmi port to hdmi cable attached to this adapter

This is the second time that I buy a type c/display port to HDMI 2. The first one wasULT-WIIQ-US 6.6ft, DP 1.4a to HDMI 2.1. Unfortunately, this cable had audio issues, it stutters every 30 seconds and after 4 days it stopped working on 4k 120hz RGB. I researched a lot on these adapters and I found out that my RTX 2070 support type c video out display port alt mode, so I searched these adapters too. It seems that many of these adapters suffers from overheating, signal loss when switching in and out of HDR. Also, some of them require USB power. It seems the most of these adapters use the same chipset, but, it is the firmware that cause these issues. Then I saw that Cable Matters provide firmware update for some of the display port/type c to HDMI 2.1 that mention many bugs fixes related to issues that I mentioned. I decided to buy the short adapter and buy a hdmi 2.1 cable instead of the cable type, as the adapter is more expensive than the cable and it reduce the chance for it to stop working properly. The longer the cable is, there is a higher chance for failure. As soon I got it I download the latest firmware update from Cable Matters website and saw that the cable is on older firmware, so I update it . It takes very short time, and it works without issues. I can send HDR signal without losing signal, the audio does not have any issues and as I wrote in the title, it works on 4k 120 Hz 12 bit RGB. I will update the review if the adapter will fail.

bought this for our new Mac Mini M4 to connect the second monitor on my wife's work area. Running two new Dell 27" high res IPS monitors. Works great, image is great. I tend to generally like their products and am usually not disappointed.

This has made such a difference on my M1 Pro 16 connected to an LG C2 42 OLED. The mouse and scrolling is so smooth at 120hz compared 60hz, and that difference is pronounced on such a large screen. The only issue I have is once in a while the signal to the TV is lost, so I just have unplug and plug it back in.

This adapter provides a stable, reliable 8k@30Hz connection from a USB-C port with support for Display Port Alt Mode to a display with an 8k-capable HDMI port.I'm using this adapter to connect an NVidia GeForce RTX 3060 mobile GPU to a Samsung QN800A TV at 8k. The GPU is accessible via a USB-C port with DP Alt Mode, while the TV supports HDMI 2.1. I'm using a fibre optic HDMI cable, but a certified copper cable would work too.I've tried multiple brands of USB-C to HDMI adapters and cables, and this is the only one I've used that provides a perfectly stable 8k connection all day long. The 30Hz refresh rate is sufficient for most productivity work, but some things, like working with video, may require 60Hz.In addition to this product, I have a Sabrent DA-UCH8, which provides 8k@60Hz using DSC. However, the Sabrent gets very hot and glitches from time to time, causing the display to briefly show either distorted colours or a black screen. The errors last less than a second, but in a normal day of use, it typically happens a few times. As a result, I am using this Cable Matters adapter primarily, with the Sabrent as an alternative when I want 60Hz.I'm hoping that Cable Matters will eventually offer an adapter with DSC support that can transmit 8k@60Hz, but until such an adapter exists, this one is great for 8x@30Hz.

Great built quality. Plug and play with my MacBook Air 13” M4 and dual monitors. Flawlessly running full 4k with 120hz refresh. I highly recommend this.

Zero stars. This thing is garbage it connects sometimes and now after return window closed it won’t connect at all. Don’t buy this trash

Use it to connect iPad to AV system. Works fine. No issues.