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

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 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).

I was concerned about if it would work, since there are so few adapters like these on the market, but StarTech's seems to work great! I hooked up my GPU's DisplayPort output into a 1080p TV, and it worked out of the box. Plus, it's a passive adapter which means it doesn't need its own power supply to do the digital conversion.

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

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.

I had another adapter but won't support full resolution of my 27" LCD - 2560x1440. This product - 4K60 HDMI - worked great with Mac mini 2012. Finally, I can get full resolution of my screen through HDMI.

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.