macOS does not support DisplayPort MST, which is required for DisplayPort daisy chaining. This has been the subject of complaints for years on this forum, Apple's forum, and elsewhere on the Internet. DisplayPort MST allows a single DisplayPort interface to be carved up to run separate displays, but macOS doesn't allow that. The only displays that can be daisy chained on Macs are Thunderbolt displays, since Thunderbolt daisy chaining is a distinct entity. Thunderbolt 3 can carry 2 full GPU interfaces, so in a Thunderbolt daisy chain scenario, each display still gets allocated its own GPU interface. But even that limits you to 2 displays, whereas PCs can run 3+ displays from that type of setup as long as the setup falls within available bandwidth. Ironically on Macs that run Boot Camp (which I realize isn't possible on the M1 systems, at least today), when those Macs are running Windows, DisplayPort daisy chaining works just fine, so it's not a hardware limitation. It's just an OS limitation.

Size class of the display as declared by the manufacturer. Often this is the rounded value of the actual size of the diagonal in inches. Information about the minimum amount of time, in which the pixels change from one color to another. Very often the manufacturer provides the response time for transition from grey-to-grey (G2G). The maximum number of colors, which the display is able to reproduce, depends on the type of the panel in use and color enhancing technologies like FRC. Information about the maximum horizontal viewing angle, within which the image on the screen is of acceptable quality. Information about the brightness of the screen. It is measured in candela per square metre (cd/m²).The storage altitude shows the maximum possible altitude for secure storing of the display. Storing it above this limit may result in damaging the display. The most widely used panels are those with 6, 8, and 10 bits for each of the RGB components of the pixel. They provide 18-, 24-, and 30-bit color, respectively.

If they would only support two displays on the Macbooks as with the Mini, which should be technically possible with the M1, (but maybe there is a seperated display driver in the Mini for the Hdmi - who knows?!) I could deal with turning off the Macbooks screen (or just close the Macbook) and use two bigger external displays - it's a shame that this is even NOT possible (at the moment) Make sure that the video cable connecting the monitor to the computer is connected properly and is secure. I have a feeling that at least the MacBook Pros will support multiple external displays at the next rev. I'm actually amazed that Apple released the 13" MBP with this limitation, since "Pro" and "only one external display" just don't belong together, in my view. I could sort of understand it with the Air, although even there it's a downgrade from the Intel version. Maybe their market research indicated that a solid chunk of Air and 13" MBP users only used at most one external display? The operating temperature shows the safe temperature range (from minimum to maximum), within which the display will function flawlessly. Outside this range it might operate improperly and/or fail entirely.Dim/discolored video can be caused by the video cable, so try reseating the cable and swapping with a known good part. Change the input color format to PC RGB or YPbPr in the Color Settings On-Screen Display Menu (OSD). When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade etc., it is always a good practise isolating the monitor by running the Built-In Diagnostics.

Dell has just launched a pair of 24-inch desktop monitors. The Dell P2421DC and Dell P2421D are entirely indetical in terms of appearance and display. Both models have a 23.8-inch IPS display with a resolution of 2560 x 1440 pixels, 99% sRGB color space coverage, 300 nits typical brightness and 1000:1 static contrast ratio, 5 ms GTG response time. The stand of each model can be removed for VESA wall mounting (100 x 100 mm holes) and provides full ergonomic adjustment - height, tilt, swivel and pivot. So until Apple releases the newer "Pro" Models with hopefully two supported Screens, the only thing to do is going for a single screen setup, is that correct? Information about whether the stand can be dismounted. Usually, this is required for wall mounting. So I guess on my wishlist for Dell stands an affordable Thunderbolt Display with "Thunderbolt Chain" with either 24" wqhd or 27" 4k As I understood the new M1 Mac Mini does only support one screen via Thunderbolt (even if it has more ports - I think it has 2) and one via HDMI so I am not sure whether it could work with two "Thunderbolt"daisy Chained Displays or if you would still need to connect each by itself.Approximate width of the display. If the manufacturer does not provide such information, the width is calculated from the diagonal and the aspect ratio. I read about the whole Displaylink thing in my research about the M1 MacBooks, but more or less the most people think it doesn't run well and if you have to opportunity better steer clear from it. Do you have in-person experience with this systems? As you wrote before the combination of 27" and 4k is in the sub-optimal space for MacOS of around 160 ppi, so this doesn't seem to make sense either. We also have U2720Q at the university and the Macbook Air 2020 (Intel) just feels slow with this 4k display connected via USB Type C/ Thunderbolt 3, at least when you run a Zoom call and work simultaneous! Maybe this has to do with the whole scaling thing you mentioned before ... e.g. I'm in a keynote and then "tab out" into safari to show a video or something, this only works when you share the whole desktop. Hopefully they come up with the higher spec 13" Macbook Pro soon and integrate two external monitors.

The percentage of the approximate area, taken by the active part of the screen, to the total front area.

Information of the number of pixels in a unit of length. With the decrease of the display size and the increase of its resolution, the pixel density increases. In general I am not looking into buying an Mac Mini, because it's not portable and I will have a need for this in normal non-pandemic life, as mentioned in my last post.