StarTech.com Mini DisplayPort to HDMI Adapter, 4K 60Hz, 1080p 240Hz, Thunderbolt to HDMI Adapter Cable Converter for mDP or Thunderbolt 1 & 2 MacBooks, MacBook Air, Mac Mini, Microsoft Surface Pro 1-6

This adopter connects Thuderbolt 2 to 4k HDMI display perfectly. It avoids expensive ( $300 ) repair of malfunctioned HDMI output of 2013 MacPro. I first purchased USB3 to HDMI adopter. I could not use it because it requires driver installation, which is impossible without having display. Apple store engineer recommended using this adopter. Thanks to both the Apple store engineer and Amazon, which delivered this in the next morning.

I originally ordered a different adapter and couldn't get the screen to look right at 3840x2160. My Mac kept telling me it was operating in low resolution mode. I tried different cable, TB2 port and different monitor but the results were the same. Then I realized the adapter I had chosen was limited to 30Hz so I ordered this one from StarTech to replace it. It worked great... as soon as I swapped out the adapter for this one I was able to run at 60Hz AND I was able to choose resolutions at 2K that were not showing up with the other adapter. Definitely glad I found this. For the curious: I am running a Mac Pro (black trashcan) with Mojave, connected this to the a thunderbolt port on Bus 1 and ran a 40ft HDMI out to the studio display (LG Ultra HD at 3840x2160 60Hz).

Hello, have received the products, everything works as described, the build quality is good and the usage converter is okay. Thank you.

StarTech adapters are my go-to company for almost any type of audio/video adapters. I got this one to let my wife connect her Windows Surface Pro to our bedroom TV and connect up a wireless keyboard to it to allow her to use it from anywhere in the room. Everything connected up fine, however, I failed to realize how bad 720p TVs are at dealing with connections from newer tech. Picture was terrible, any adjustments on the TV or the Surface Pro settings would make things worse. So...looks like it's time for a new TV! lol Buy the adapter. I use it on other applications in my home theater and living room TVs and everything works, sounds and looks just fine. If you have a 720p TV, get this adapter and buy a new TV like I'm about to! lol

I'm disappointed in this. I used it to connect a Thunderbolt 2 MacBook Pro to a recent (2024) high-end Sony TV, using a HDMI 2.0b cable. The TV presented the video without a problem, but no audio. The same HDMI cable does carry both video and audio from my Tivo to the TV. And a MiniDisplayPort-to-HDMI cable (from Amazon Basics) delivered both video and audio from the MBP to the TV. I conclude that the StarTech adapter is the problem. I'm probably going to return it.

Works as expected and is well made. I got this to try to do 4k 60 Hz video from a Mini DisplayPort output to HDMI input on a TV. It was not able to do 60 Hz, but that is probably due to EDID signalling coming from the TV, so not really a flaw with the adapter. I do have a monitor that can do 60 Hz 4k over HDMI, but I have not tested this adapter with it yet.

I had a moment of weakness and bought a few similar devices in a local big-box general merchandise store. Bad idea. They mostly worked, but there was excess flickering, and signal artifacting when powered down, so that a running computer that was idling with the displays off would wake the displays without sending a signal every 2-3 minutes with no input to the machine. Retiring those u it’s to the “use these in a pinch” box and installing the StarTech units fixed all of that. Refresh rates are correct, image quality is better, and sleeping equipment actually sleeps. The fit on both ends is good and secure, and the units themselves are silent and unobtrusive.

The main reason I got this was to get 4k @ 60, but this adaptor didn't give me that output. To be clear, I'm certain that both my graphic card and the monitor can handle it, as a mini display port to display cable on the same machine + monitor gives me 4k @ 60, and another laptop on the same monitor gives me 4k @ 60 using HDMI.

Adapter ist nicht gleich Adapter... Dieser Startech 4K-Adapter ist bisher der einzige, mit dem die Videoausgabe von meinem Surface Pro 6 auf einen externen 1440p-Ultrawide-Monitor auch über den Mini-Displayport-Anschluss am Surface Dock 1 zuverlässig (bei 3440x1440@60Hz) funktioniert. Der Aufpreis zu anderen 4K-Adaptern zahlt sich bei dieser Kombination aus, wenn am Monitor kein DP-Eingang verfügbar ist. Wichtig: um die volle Bandbreite dieses Adapters auszuschöpfen, benötigt man auch ein entsprechend ausgelegtes HDMI-Kabel!

Adaptateur sensiblement plus cher que les autres, mais un des seuls à permettre la 4K60. La pluaprt des adaptateurs sur le marché ne gèrent que la 4K30.

Mejora sustancial en la resolucion HDMI para equipos con Thunderbold-2. Mediante esta adaptador además se pueden configurar dos monitores. Recomendable totalmente. Un acierto.

I needed to connect my laptop to a 4k monitor to run at 60Hz A lot of cables are just marked up as 4K but are just at 30Hz but to get the best out of a 4k monitor or tv you need this cable! Very high quality. Before buying this cable I had to contact Samsung monitor support and they told me that I must make sure that the adapter is 60Hz as most are not and that I must use the supplied Samsung high quality hdmi 4k lead and that I must buy a high quality adapter or lead to make it work - I was sceptical. This adapter worked straightaway and the monitor instantly recognised the 60Hz output. A quick change to the resolution and all was working fine. Having bought a 4K Belkin mini display port to hdmi lead 18 months ago for £50 from John Lewis, only to find it is 30Hz is annoying. I should have just bought this adapter. I can highly recommend this adapter.

I tried several cables and adapters to get my Surface Dock 1 (which has 2 mini dp) to work with my two new 75Hz 1080p monitors from Koorui (22N1). The monitors would not wake from sleep. Sometimes monitor 1 would be come monitor 2 and I had to go to displays settings to change it. With another cable, there was not video at all. All those problems were solved with these adapter from Startech. The monitors wake from sleep, or a restart properly, they don't "swap sides" and I am getting full 75Hz refresh rates. These adapters are more expensive, but they work. Don't waste your time with others if you have the Surface Dock 1.