Review on 📺 StarTech.com 4K HDMI to DisplayPort Video Adapter with USB Power - 6 inch - HDMI 1.4 Male to DP 1.2 Female - Active Monitor Converter (HD2DP) by Jennifer Martin

I'm using a Clevo 740su laptop with Ubuntu 15.10. It has a 1.2 mini display port and 1.3a HDMI ports. I have 3 HP ZR30W 2560x1600 monitors at home that I plan to use with this laptop. I connected two monitors to the mini display port using the Startech MSTMDP122DP and bought this to connect a third to the HDMI port (which happily drives my 4K panel at the office). Pros: Arrived in the box with a 12" USB extension cable - which was a nice touch. Easy to connect, Ubuntu recognized it immediately. Cons: Ubuntu only offered a resolution of 1280x800. I know this is probably unfair because the Startech website doesn't list 2560 x 1600 as a supported resolution, but this gadget is designed to be able to display 4K and another reviewer claimed they have one with a 2560 resolution x 1440 so I figured risk it. Even manually when I registered the new mode with xrandr I couldn't get the monitor to switch to 2560 x 1600.4 stars because Startech could have been better. It could be an Ubuntu issue. It could be a compatibility issue with my laptop or monitors. Just wanted to warn anyone hoping to use this at 2560x1600 - it didn't work for me.