48Gbps Unidirectional 8K USB C to HDMI Adapter, Supports 8K 60Hz / 4K 240Hz HDR, USBC to HDMI 2.1 Adapter Compatbile with Thunderbolt 5/4, Only 4K@60Hz on macOS

I've been trying to find an adapter that will work with my Macbook Air M2 and my Alienware monitor AW3425DW (3440x1440) at high refresh rates. The other adapters I bought only got me 60Hz. This one works perfectly @120Hz native resolution.

Purchased this so that I could use my M1(Pro) Macbook Pro with a 120hz 4K Monitor over HDMI. This isn't supported by default and when you plug in to the integrated HDMI port, you are limited to 60hz. Delighted that when I received this adapter, 120hz 4K over HDMI was supported by default - I didn't even need to update the firmware as some online forums suggested. I guess these newer built devices are shipping with the newer firmware by default. Couldn't be happier. No longer need to manually switch Displayport on my monitor!

Bought this specifically to get 120Hz out of my M1 Pro Macbook Pro as I had moved to a LG C3 42 inch TV as a monitor. Asked to confirm this was the right one (it was) and they sent the instructions for how to apply and update. All done, and it worked straight away with my Sony TV (as a test). However when I got my C3, I could only get 30Hz out of it (using a known good cable that handled 120Hz directly on the PC straight off the bat and would do 60 Hz straight from the Macbook). Contacted Cable Matters and within the day I received a brand new firmware update which worked and I got 120Hz with the LG C3. They even confirmed that it would work with the latest update of Sonoma. Note: You will need a USB-C or Thunderbolt connection which supports DP Alt mode so don't get disheartened if it doesn't work after the update. A great product backed by fantastic customer service from Cable Matters (all responses were within the day). Special shout out to Grace from Cable Matters who was brilliant!

EDIT: After some tech support was able to point me in the direction of a firmware update, I was able to get the device working at the desired resolution and refresh rate. The device had problems with Intel Gen 11 and an update to the firmware resolved the issue. However, if you try to find the device with the model number (201388) on their website, you will not be able to find it. Instead, you will have to look in the 'Knowledge Base' portion of their website and find the VMM6100 firmware update. This relates to the chipset. If you google, 'Cable Matters 201388 Chipset', you'll see VMM7100 chipset, which is incorrect. This is an utter mess! But was at least able to resolve the issue in the end! OLD REVIEW: *Could never get anymore than 1080p out of this* Only getting 1080p@60hz with this converter. I have the correct HDMI cable (works @ 8k60) and Thunderbolt 4 connection. In the end I had to buy another cable, USB-C to DisplayPort and now I am getting my desired resolution (2k@165hz).

Disclaimer: 4k 120Hz is not supported out of the box, it will require manual tweaking The process of enabling it is straight forward and requires less than 5 minutes of work. You will require a Windows machine with a thunderbolt3/4 port or DP over USBC capabilities. The firmware and instructions are found online after searching: DP/USB-C/Thunderbolt 3/4 to HDMI 2.1 4k@120hz RGB4:4:4 10b HDR with Apple Silicon M1/M2/M3 now possible ! The Cable Matters USB-C to HDMI 2.1 solved all my issues. I've long wanted to embrace the one cable life with my Macbook but always had to compromise. All docks I've come across are limited to 4k 60Hz when connected to Macs just like the HDMI port on the device itself. This adapter was outstanding and singlehandedly resolved my issue. Using the firmware update tools and an older firmware version I was able to utilize the Thunderbolt 4 ports on my dock and display 4K 120Hz HDR to my TV. If you're planning to replicate this, for the smoothest experience ensure the adapter is the 201388-A model and you're using a certified HDMI 2.1 cable. The build quality on the adapter is great. The aluminium shell dissipates the heat from the chip inside the adapter and allows it to run significantly cooler than other products I tried. I was so happy with this adapter that I ordered another one straight away. I recommend this adapter to everyone.

Works for MacBook Air M3 15 inch 👍🏻👍🏻👍🏻 Used with LG OLED C4 42"

Reviewing this based on it's 4K 120Hz ability so anything else isn't relevant. Bought this as it's pretty much the only game in town (Fully Certified 2.1 compliant) so far from what I can see available TBH. I wanted to Tap my gaming laptop's USB C port & feed it into my big TV as I wanted to check out the TV's gaming abilities at that 4K 120Hz spec. I ordered this & upon prompt arrival I connected everything up & that was that, job done really. Laptop has a 3070 card + a 48Gbit USB C out port & the Sony TV had x2 HDMI 2.1 certified ports. This little device worked 1st thing & it does exactly what it claims & allows me to game at 4K 120Hz on the big screen instead of always gaming on the far smaller laptop display. It hasn't faltered once. It appears solidly built & it's In + out plugs/ ports are nice & robust too. It's even quite pleasing to the eyes for such a device & has no horrible plastic'y parts. I honestly can't think of anything even slightly negative to say about the thing. So for 30 Quid it's well worth the outlay if you're like me & looking to get 4k 120Hz without an HDMI 2.1 output port. To sum things up then = Well worth the money, built well & does exactly as it claimed :) I can Highly Recommend this little device :)

Bought this adapter as my laptop only had a HDMI 2.0 port but it had a thunderbolt 3 USB-C. Worked absolutely flawlessly out of the box running in to a Sony A95L and can achieve 4K@120hz 10bit with HDR, Also passing down Dolby atmos with no issues too. 100% recommend if you were in the same situation as me.

I have two of these. I use one on an M2 Mac mini with the mac firmware update that Cable Matters offers to enable 4k@120hz HDR, works perfectly, no problems waking up from sleep. I use a second on a 2019 5K iMac, again no issues at all, the mac firmware update does allow me to get slightly higher refresh rates at 1440p with my TV. The mac firmware is available from Cable Matters, it is targeted for the M series Apple silicon and not intended for PCs or Intel macs (you may have no sound or display issues). The firmware update can only be done in Windows and you can flash back and forth between the mac specific and normal versions if needed. This adapter should just work as is out of the box, however I highly recommend updating to the latest firmware available from Cable Matters (Mac specific or normal). I had one Windows laptop that did not work with this adapter until I updated the firmware.

Ich mag meinen NUC 13 Pro (NUC13ANHi7), hatte einen Monitor via USB-C und einen LG 48C1 TV via HDMI angeschlossen. Da das mit HDMI 2.1 Kabeln immer so eine Sache ist habe ich einfach nochmal eine vorherige Bestellung erneut ausgelöst. Das Kabel funktioniert wunderfein mit einer 3080 und dem LG TV. Nur warum flackert denn jetzt der NUC so merkwürdig? Das passiert immer, wenn ein Video im Browser läuft und was anderes nebenher passiert, ich z.B. auf der Seite mit dem Video scrolle. Nach einer längeren Suche schien des Problems Lösung immer wieder die Deaktivierung der Hardwarebeschleunigung in den Browsern zu sein. Das hat auch funktioniert, nur lag dann deutlich mehr Last an der CPU an, was wiederum die Lüftergeräusche nervig machten. Der NUC ist ja eh schon relativ laut und heult bei Kleinigkeiten auf. Etwas Ruhe habe ich da reingebracht indem ich den bebilderten Anweisungen im Prad Artikel "Intel NUC 12 Pro: So zügeln Sie den Lüfter des Mini-PCs" gefolgt bin. Also habe ich weitergesucht und bin dann auf die Cable Matters Adapter und Kabel aufmerksam geworden. Gesucht, hier gelandet, bestellt, bekommen, angeschlossen und läuft. Die Sache mit nötigen Firmware Updates ist wohl lange genug her und ich musste mich damit nicht rumschlagen. Durch die Verschiebung des LG C1 von einem eingeschränkten HDMI 2.1 auf DP1.4 kann ich jetzt auch wieder die Hardwarebeschleunigung nutzen. Das Display lässt sich jetzt auch mit den nativen 120Hz betreiben. "VRR/G-Sync wird nicht unterstützt." -- Lustigerweise zeigt mir das Intel ARC Panel an VRR sei aktiv. Ich spiele am NUC aber eigentlich nicht. Vom bekannten G-Sync Flackern merke ich hier auch nichts. Vielleicht hängt das ja eher mit dem Standard als VRR allgemein zusammen. Schade, dass ich extra einen 33 EUR teuren Adapter kaufen musste, um das Problem zu lösen. Dafür wirkt das Cable Matters Produkt dann allerdings sehr wertig. Es wird auch relativ warm, vielleicht im unteren 40C Bereich. Achtet darauf dem Ding ein wenig Luft zu geben und stopft es nicht irgendwo zwischen.

Cumple con la función de pasar señal 4K 120hz hasta 12 bit color Full Gamma. Pero se pierde compatibilidad con VRR (Gsync / Freesync) Si tienes una RTX 20XX y no quieres estar limitado al HDMI 2.0 este adaptador es la opción, pero considera que no es compatible con VRR.

Testei vários cabos problemáticos: Benfei 8K 60hz - funciona a 120hz e HDR mas com cortes de som. Sabrent 8K 60hz - Apenas 4K 60hz sem HDR. Ugreen 8K 60hz - Não funcionou de todo, nem sequer é reconhecido pelo MacBook Air M4. FINALMENTE este cabo cable matters versão macOS funciona perfeitamente com a minha LG C4 42. 120hz com HDR e som perfeito. Além disso funciona bem com HDMI-CEC. Ou seja, quando o MacBook entra em stand by desliga a tv e quando volta “acorda” o monitor. Assim não é preciso usar o telecomando da TV. Qualquer Mac com chip Apple silicon M1 e M2 funciona com HDMI-CEC desde que se use um adaptador hdmi. Um cabo direto usb-c para hdmi não permite usar esta função, tem de ser um adaptador igual a este cable matters. Macs com chip M3 e M4 já tem a função HDMI-CEC de origem.

I have the AMD RX6800 XT graphics card in my computer, it has one HDMI output, two DisplayPort and one USB-C. The HDMI was already taken by another monitor I use, so I ended up opting for USB-C -> HDMI to be able to share screen to my TV. Cheap adapters kept limiting my connection. One gave me only 24Hz, very "laggy" picture. Another would top out at 30. A third wouldn't even let me reach 4k. Then I decided to go for the recognized Cable Matters, and just out of the box I can turn up all settings without any issues. Thanks for a reliable device! Extra bonus star for the fact that firmware updates are available even after buying the product. That's was beyond expected. 6/5!