StarTech.com MDP2HD4KS Mini DisplayPort to HDMI 4K Audio / Video Converter – mDP 1.2 to HDMI Active Adapter for UltraBook / Laptop – 4K @ 30 Hz - Black

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.

Adding on e more positive review.Got this today. This is a short stubby of active cable, nice gloss finish.Plugged it and it works straight out - no drivers, no questions asked.If you are wondering whether you can connect an older laptop with Mini DisplayPort 1.4 (I believe mine is V1.4) to a new 4K TV and also make it work at 60Hz without flickering and at full resolution, I can confirm this does the job. You should check what is the max supported resolution on your DP and mchine so you don't blame the adapter for not doing it's job well.If your PC is newer and has support for HDMI 2.0 then you can do this directly through HDMI - no need to buy this unless you need another screen.Please note for all this to work you also need the correct spec HDMI 2.0 cable - not all are made equal! The shorter the better.

Brilliant! Used this to hook up my Radeon Pro graphics card to my Panasonic TV via a home cinema receiver, connects at 1920x1080 at 60hz!! Initially had an issue with overscan and Windows desktop getting cropped around the edges so only the top half of taskbar appeared, with other edges also being cut off, this was fixed by changing the picture scaling setting in menu on the TV.Build quality excellent.

Works fine and confirmed 4k at 60Hz without issues.

I have a mac mini and have tried two mini display to VGA adapters which have both failed due to a design flaw so everyone that has had the problem recommended a mini display to VGA adapter of this make,so thought I would give it a go and bought the DVI version as I am told it's better,strangely I can't tell the difference in picture quality,but I can't play sound through my monitor or Hi-Fi speakers the way I could with the VGA or HDMI cables anyway this design is a much tighter fit and much better quality than the ones from Apple.

Used it a couple of times now. Works great outputs from mini DP of surface pro onto Panasonic TV screen with no problems and with sound. Not tested 4k

I use it at 5K x1440 60p to connect an rtx a2000 to a Dell 49" super ultra wide monitor. Works fine

I bought this to connect my 27" iMac to an external monitorPlugged in and works perfectly first time.I have used Startech display port adaptors before and whilst not the cheapest, they have proven reliable time and time again