Is this card fast enough for 4K video?

No. It is Class 10 and UHS-I without a V30 or U3 rating, so it suits 1080p video and photos. For 4K, choose a V30 card such as a SanDisk Extreme or Samsung Pro Plus.

Will it work in a Nintendo Switch?

Yes. The Switch accepts microSDXC cards, and this one works for game downloads and saves. Load times are a little slower than with premium cards.

What capacities are available?

It comes in 64GB, 128GB, 256GB and 512GB. Pick based on how much video, photo or app storage you need.

Does it come with an SD adapter?

Check the pack you buy. Many Insignia microSDXC cards ship as the bare card, so you may need a separate adapter for full-size SD slots.

Is it good for a dash cam or security camera?

Yes for typical 1080p recording. These devices rewrite constantly, so a high-endurance card lasts longer under heavy looping recording.

How does it compare with SanDisk or Samsung cards?

It costs less and is fine for everyday storage, but it is slower and less durable under heavy use. Name brands publish higher speeds and offer high-endurance lines.