Is this card fast enough for 4K video?

Yes. The V30 rating guarantees a minimum 30MB/s sustained write, which covers 4K recording on most action cameras, drones and phones. Peak write is rated at 120MB/s.

Will it work in a Nintendo Switch?

Yes. The Switch takes microSDXC cards, and the 512GB size holds a large game library. The A2 rating does not help on Switch, but the read speed keeps load times reasonable.

What is the difference between U3, V30 and A2?

U3 and V30 both mean at least 30MB/s sustained write for video. A2 sets minimum random read and write speeds for running apps from the card on Android.

Does it come with an adapter?

It ships with a dual-interface card reader with USB Type-A and Type-C connectors, not a plain SD adapter. That lets you plug the card into a laptop or phone directly.

How does it compare with a SanDisk Extreme?

Both are U3 V30 A2 cards with similar rated speeds. SanDisk adds a lifetime warranty in some regions and RescuePRO recovery software; Patriot includes the USB-A and USB-C reader instead.

Is 512GB enough for a phone?

For most people, yes. It holds tens of thousands of photos or many hours of 4K video. Check that your phone still has a microSD slot, since many flagships have dropped it.