Is this card good for a dash cam?

Yes. It is built for continuous recording and rewrite cycles, which is exactly what dash cams and security cameras do. The V30 rating covers 4K footage from most dash cams.

How fast is it in real use?

ADATA rates it at up to 100 MB/s read and 85 MB/s write over UHS-I. Expect sustained writes near the lower figure, which is fine for video but slow for moving large photo or game files.

Will it work in a phone or tablet?

Yes, if the device takes microSDXC. The A2 rating helps apps stored on the card launch faster on Android. Check that your device supports cards above 32GB.

How does it compare with a standard microSD card?

Standard cards are cheaper but wear out faster under constant recording. This one is tuned for endurance, so it lasts longer in cameras that write nonstop, at the cost of peak speed.

Does it come with an SD adapter?

The listed contents do not confirm an adapter. If you need to use it in a full-size SD slot, plan on a separate adapter.

Is 512GB enough for 4K recording?

It holds many hours of 4K footage, though bitrate decides how many. For loop recording in a dash cam or security camera, it means far less frequent offloading.