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Finicky connection in the port. It works great once you find the sweet spot by wiggling the connector around. As long as you do not move it or the HDMI cable around (or even bump it), it'll continue to work solidly. If you do ever nudge the connection/wire, just wiggle it a bunch again until the picture comes back. Don't use this product if you need a reliable port adapter - spend more money on a higher-quality product.
I bought this converter in order to use my laptop (which has only VGA and displayport out) to drive my HDTV (which has only HDMI and VGA inputs). The vga interface quality was really poor and totally wastes the HD capabilities of the TV. This is converter has been working decently so far (no glitches, loss of resolution or quality) for converting displayport video to hdmi.
It does not, however, convert and transmit the audio channel from the displayport. That was a little disappointing as it was not mentioned in the product specs. Luckily, I did not really need that feature and was able to easily work around by directly connecting the audio system to my laptop.
I originally brought a cheaper option, but it broke really fast. I then decided to buy this and did not have a single issue. However after a year or so, it stopped working. I took it apart and found out that one of the soldered tips from the wire to the little board on the display port tip came off. It seemed like a great product and I generally never had issues with the Cable Matters brand.
Received in June 2014. In the past few weeks (Nov 2015), it started to connect intermittently. I purchased this instead of a one-piece adapter because I don't have much room to the side of my laptop where the displayport jack is, but I think the cable is too short for a 90-degree bend. It's acting like there's a loose connection, and usually works if I straighten the cable between the two pieces.
Worked fine for almost a year and a half, so not too bad for the price. The new 4k-ready adapter looks to be smaller and have a longer cable, which might last longer in tight spaces.