Hi. I can not set the resolution to 3840*2160 on a B286K monitor. My computer is a Dell Percision m 4700 with an NVIDIA quadro 2000k graphic card on a windows 7 professional 64 bit and and I am using the display port( which is able to provide that resolution at 60 Hz rate).
The problem is that computer does not recognize monitor to have 3840*2160 and gives a maximum of 1920*1080. The display driver is generic pnp monitor and does not change even when I install Acer provided B286HK driver for windows 7 64 bit.
Once an Acer support agent, drive me through a number of steps including power draining of monitor (pression power button for 30 seconds) and a few restarts and it worked. But I did not succeed to redo it and my second try with acer support failed as the support agent and her manager were neither knowledgable enough to know their product nor respectful to seek a better technical help for me.