Hello, My local Apple Store has LG UltraFine 5K monitor hooked to a Mac Pro (Late 2013) via TB3 to TB2 adapter running at 5120 x 2880 resolution. Based on my understanding from this forum, it is impossible to run 5K resolution via single TB2 output due to limited bandwidth of DisplayPort 1.2. Usually, 2 x TB2 outputs are required to drive a display at 5K resolution (such as the Dell UP2715K). According to https://support.apple.com/en-gb/HT207448, the Mac Pro (Late 2013) only supports maximum of 4K resolution at 60Hz. So could someone please explain why am I seeing 5120 x 2880 in display preferences? Is it possible that the Mac Pro is able to support 5120 x 2880 at 30Hz on the LG UltraFine 5K monitor? Cropped screenshot: Full size screenshots taken from the Mac Pro in Apple Store: First test: 5120 x 2880 (File size: 28.1MB) https://dl.dropbox.com/s/m3eo5swfczw6uuz/Screen Shot 2017-02-25 at 18.51.22.png Second test: Default for display / 2560 x 1440 (File size: 21.1MB), please note screenshot size is 5120 x 2880 pixels https://dl.dropbox.com/s/6ipaeh4k9ykl462/Screen Shot 2017-02-25 at 18.50.50.png Third test: 3840 x 2160 (File size: 56.2MB), please note screenshot size is 7680 x 4320 pixels https://dl.dropbox.com/s/e35aoer2xupc27g/Screen Shot 2017-02-25 at 18.43.54.png Also, how do I check the refresh rate for LG UltraFine 5K? The monitor itself does not have any buttons!