#micro sd speed

Author's Note: Article has been updated to include Application Performance Class under the Read/Write Speeds section as of February 23, 2018. There are three physical sizes of SD cards that are used nowadays: Standard Mini Micro Of the three, the mini SD size is the least common, as it's rare to see a device that uses it nowadays. Read/Write Speeds Now, we move on to read speeds and the classes that dictate them. The SD Association has provided different speed class standards to help users decide what particular card they need for their device. There are five types of speed classes, which are as follow: Speed Class UHS Speed Class UHS Bus Speed Video Speed Class Application Performance Class For the standard Speed Class, it indicated by a number inside a broken circle - 2, 4, 6, and 10. This one is pretty simple as the number inside the box denotes the minimum sequential write speed in MB/sec. For example, a Speed Class 10 card will have a minimum sequential write speed of 10MB/sec, and so on. Next up, we have UHS (Ultra High Speed) Speed Class. Read more in our articles including "A Complete Guide to SD Cards" and "Microsoft to end Adobe Flash support for Windows 10 in July".