# SanDisk Ultra 512GB microSD Card for Chromebooks

Source: https://www.ranked10.co.uk/tech/best-512gb-microsd-cards/sandisk-ultra-chromebook-512gb
Ranked #8 in "Best 512GB MicroSD Card 2026: 10 Ranked, and Why Read Speed Misleads": https://www.ranked10.co.uk/tech/best-512gb-microsd-cards

- Price: £107.04 (checked on Amazon UK on 2026-09-15)
- Amazon rating: 4.6 from 6,188 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0BDXQY95L?tag=ranked10-21

The SanDisk Ultra for Chromebooks is the card at number eight in this guide. It is a 512GB microSDXC card priced at £107.04, rated 4.6 out of 5 from 6,188 ratings, and its headline claim is a read speed: the title says up to 150 MB/s, and the second bullet repeats the 150 MB/s figure for transfers.

The same listing then contradicts itself. Further down the page, the specification table lists Read Speed as 150 Megabytes Per Second but Media Speed as 140.0 — two different numbers in one advert for the same card. The class ratings are consistent, and they matter more than the read figure: this is a Class 10, U1, A1 card, and the fourth bullet describes what that buys you — HD video recording and playback, not 4K. Everything on this page comes from the Amazon listing, not from any test we ran.

## Specification

| Field | Value |
|---|---|
| Price | £107.04 |
| Rating | 4.6 out of 5 from 6,188 ratings |
| Advertised read speed | 150 MB/s (title, bullets and spec table) |
| Media Speed (as listed) | 140.0 |
| Speed class | Class 10 / U1 |
| App performance | A1 |
| Capacity | 512 GB microSDXC |
| Model | SDSQUAC-512G-GN6FA |

## Questions people ask

**What read speed does the SanDisk Ultra for Chromebooks 512GB actually claim?**

The title and the product bullets say up to 150 MB/s for transfers. The specification table on the same page lists Read Speed as 150 Megabytes Per Second but also lists Media Speed as 140.0, so the listing carries both figures.

**Can this card record 4K video?**

The listing does not say so. Its fourth bullet says that thanks to U1 and Class 10 you can record HD videos with the microSD card and play back without any problems. HD is the only recording format named.

**Is it really made for Chromebooks?**

That is the whole pitch. The SanDisk Ultra is described as tested and certified to work seamlessly with Chromebooks, and Chromebook is the only compatible device the listing names.

**What does the A1 rating mean here?**

The listing describes A1 App Performance as meeting the performance standard for smoother app performance on the card.

**What is in the box?**

One SANDISK Ultra microSDXC memory card for Chromebook 512 GB, plus an adapter the listing says is for smartphones and tablets.

**How much does it cost and how is it rated?**

£107.04, with a rating of 4.6 out of 5 from 6,188 ratings as shown on the listing.