Questions about Dell P2219h

All you need is a cable that fits with the connections on you laptop. A DP cable is included in the box with the screen.

Of course the monitor fits on the Air or Pro, in my case with HDMI cable and USB-C hub. With sufficient distance to the monitor, the picture is super, so it's great as a second monitor. Less good as the only monitor, the 1920x1080 resolution (and PPI) at 22" is not ideal for the Macbook. Less sharpness and less on the screen. I will probably switch, to QHD 2560×1440, e.g. Dell P2421D/DC or similar.

Dear Stefanie I bought the same screen as well. The cable that came with it has an HDMI connector at both ends. I therefore had to buy a cable separately (one side HDMI and the other USB-C).

This should work, as the corresponding connections are available. As I saw, the device that sends is more decisive (Surface).

So ein Kabel sollte gehen: Lindy Mini DP zu DP (2m, Display Port)

Yes, 1 x USB-A to USB-B 1 x Display Port Description from Dell Schweiz: Enthaltene Kabel 1 x DisplayPort-Kabel - DisplayPort zu DisplayPort 1 x SuperSpeed-USB-Kabel https://www.dell.com/de-ch/shop/accessories/apd/210-apwr/configurations

For the "FullHD" resolution of this monitor, you don't even need a cable that supports 4k or UHD or even higher resolutions, i.e. any HDMI-HDMI cable currently available should work in principle. For a notebook or mobile setup (where the cable is often laid and plugged in), you should perhaps not choose the stiffest cable or the cheapest/fragile connectors - just study the corresponding customer reviews for the possible candidates.