HP 27" WQHD LED-backlit IPS Monitor

i bought this last time it came up. It is VERY picky on what source to get to the full resolution. It only ran 2650x1440 with a display port cable. will not do 1920x1080 from an hdmi to display port cable/adapter. nor will it do it with a dual link DVI cable to display port…

Having shopped DP adapters recently for work, the adapter’s internal design may be the actual limitation here. A good number of the adapters use a chip that is capable of the bandwidth but can only deliver single-link.