Dell Docking Station WD15 K17A Compatibility with MacBook

Hi NidhixAMS,

We want to help with connecting displays to your Mac.

Your Mac won't support plugging multiple displays into the dock. You can have one display on the dock and one display on another port on your Mac.

You can read more about adding monitors here:

Connect one or more external displays with your Mac

Depending on if your Mac is configured with M2 Pro or M2 Max, it might support up to 2 or up to 4 external displays, but each one would need to be plugged into its own USB port:

MacBook Pro 14- and 16-inch - Tech Specs

Thanks for using the Apple Support Communities.

NidhixAMS Said:

"Dell Docking Station WD15 K17A Compatibility with MacBook: […]when I connect windows laptop, I just connect the dock USB-C connector and both monitor works. When I connect MacBook, I connect the USB-C and HDMI.[…]”

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Getting 2 or More External Displays:

The J5 USB-C Dual HDMI Docking Station allows for more than two extra monitors. How so? Well, plug in one display to the Mac using the USB-C Digital AV Multiport Adapter and then plug the J5 hub with 2 HDMI displays (one 4K), and then you'll have 3 external screens. It all mirrors and extends.

if you uncheck [_] Mirror Displays, you get Extended Desktop, like this:

the mouse moves freely across the virtual divide between the displays, and can carry any window part way or all the way across. Both parts of a window split across displays will scroll "the right way".

NidhixAMS Said:

"Dell Docking Station WD15 K17A Compatibility with MacBook: [...]Is there any setting change that I need to do on my Mac Book Pro to display dual screen?"

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About Dell Docking Stations:

Ask in Dell Community:

Consider asking this in the Dell Community, as you might get a direct answer in there: Dell Community - Dell Help

The Apple standard for its built-in hardware-accelerated displays, makes them suitable for full-motion video for production/display of cinema-quality video with NO dropped frames, and NO dropouts or partial-blank scan lines due to memory under-runs or other issues.

Windows has no standards for display quality, so connect what ever you wish to connect -- it is your problem.

On Macs, to support multiple displays on one cable, the computer port, cable and first device (Dock or Display) must all be genuine Thunderbolt.

USB-C has only half as many data pathways, and is not supported for this use on a Mac.

if you built-in display and external display are showing the m=same picture, that is called

[√] Mirror displays

The two icons for your two displays are nearly co-incident.