This is a comprehensive guide to microSD cards, covering their types, features, performance, and testing methods. Here's a summary of the main points:
**Types of MicroSD Cards**
* UHS-I: The most common type, with speeds up to 104 MB/s
* UHS-II: Faster than UHS-I, with speeds up to 312 MB/s
* SD Express: The latest and fastest type, with speeds up to 880 MB/s
**Performance**
* Sequential read/write speeds are measured using benchmarks like CrystalDiskMark and BlackMagic Disk Speed Test.
* Random performance is also tested using these tools.
* Cards can be formatted for use on different devices, including Windows and macOS.
**How We Test MicroSD Cards**
* A series of tests are run to verify the card's performance, including:
+ Copying files of varying sizes
+ Downloading games on a Nintendo Switch 2
+ Running benchmarks like CrystalDiskMark and BlackMagic Disk Speed Test
**Recent Updates**
* November 2025: Tested Walmart's Onn microSD Express Card and updated notes for the best cards for the Nintendo Switch 2.
* September 2025: Added advice on buying a microSD Express card for the Nintendo Switch 2.
* May 2025: Updated guide to reflect new microSD Express card releases, including the Lexar Play Pro and PNY XLR8.
* February 2025: Updated top pick to the Lexar Professional Silver Plus, added SanDisk's recently released microSD Express card as a pick for absolute speed.
**Top Picks**
* Lexar Professional Silver Plus (top pick)
* Samsung Pro Plus (runner-up)
* SanDisk's recently released microSD Express card (fastest option)
**Avoiding Counterfeits**
* Buy from reputable brands and retailers.
* Check the seller's ratings and reviews on Amazon.
* Be wary of prices that seem too good to be true.
This guide provides a comprehensive overview of microSD cards, including their types, features, performance, and testing methods. It also includes recent updates and top picks for different needs and budgets.
				
			**Types of MicroSD Cards**
* UHS-I: The most common type, with speeds up to 104 MB/s
* UHS-II: Faster than UHS-I, with speeds up to 312 MB/s
* SD Express: The latest and fastest type, with speeds up to 880 MB/s
**Performance**
* Sequential read/write speeds are measured using benchmarks like CrystalDiskMark and BlackMagic Disk Speed Test.
* Random performance is also tested using these tools.
* Cards can be formatted for use on different devices, including Windows and macOS.
**How We Test MicroSD Cards**
* A series of tests are run to verify the card's performance, including:
+ Copying files of varying sizes
+ Downloading games on a Nintendo Switch 2
+ Running benchmarks like CrystalDiskMark and BlackMagic Disk Speed Test
**Recent Updates**
* November 2025: Tested Walmart's Onn microSD Express Card and updated notes for the best cards for the Nintendo Switch 2.
* September 2025: Added advice on buying a microSD Express card for the Nintendo Switch 2.
* May 2025: Updated guide to reflect new microSD Express card releases, including the Lexar Play Pro and PNY XLR8.
* February 2025: Updated top pick to the Lexar Professional Silver Plus, added SanDisk's recently released microSD Express card as a pick for absolute speed.
**Top Picks**
* Lexar Professional Silver Plus (top pick)
* Samsung Pro Plus (runner-up)
* SanDisk's recently released microSD Express card (fastest option)
**Avoiding Counterfeits**
* Buy from reputable brands and retailers.
* Check the seller's ratings and reviews on Amazon.
* Be wary of prices that seem too good to be true.
This guide provides a comprehensive overview of microSD cards, including their types, features, performance, and testing methods. It also includes recent updates and top picks for different needs and budgets.