This is a legit active adapter. I am using an Igel UD3 LX11 enterprise mini computer running an AMD R1505G with Vega 3 iGPU. It runs LibreELEC and functions as an HTPC. This machine only has DisplayPort 1.2a out, but is very much capable of HDR10 passthrough to an TV with HDMI 2.0 ports...with a properly supported, stable adapter, that tells the Vega it supports HDR stably. This adapter worked wonderfully, plug and play! I can stream full HDR10 content from my extremely low powered endpoint now with no drops or hiccups. Completely stable, zero config, Vega 3 and the Mesa drivers figured it out right out of the box. Well worth the price to breathe life into this HTPC! Cost me approximately 90% less than an Nvidia Shield inclusive of the cost of this adapter for identical or better performance.

Curious about the title? Well, if you think about it, an adapter should fade into the background pretty much the moment it's installed. So, if you're ever thinking about it after you've installed it, then it probably isn't performing well. Ergo, I never really think about the ones I bought from Monoprice....

These are performing great. The video card in my personal computer uses Display Port as does the docking station for my work laptop. But the monitors have one Display Port and one HDMI each. These adapters enable me to connect both sources and then they just work - no fuss, no complications... like I said, they never remind me that they're there.

The adapter works fine for 4K, but not for 4K HDR. I get all kinds of problems with HDR, like the screen being badly white-washed, or a sudden flicker every few seconds (very annoying).

A little digging revealed that HDR over displayport isn't actually supported before version 1.4, and this adapter is displayport 1.2.

worked as needed. The slight flexibility of the dongle allows it to plug in and still turn lengthwise for tight spaces.

I was running into an HDMI outlet bottleneck on my Nvidia graphics card, I couldn't push more than 30hz from the HDMI port. I bought this adapter and pair it with a 4K compatible HDMI cable, and boom, 60hz 4K instantly! Works like a charm