Do-you-Know-that-while-purchasing-a-Memory-Card-you-must-know-its-Class-KICA-NEWS-to-USE
The high capacity microSD, aka microSDHC, are those microSD cards with capacities in excess of 2 gigabytes that adhere to the SD Association's standard for high capacity cards. What does the Class Rating mean? What does that "C" with a 4, 6, 10 or 2 inside it signify?
The class refers to the data transmission speed (DTS) of the card, its ability to accept and send information from the device in which it is installed. If you know how quickly a device can read and write to the card you can more closely match the card to it. There is no sense in putting a Class 6 card in a device that writes so slowly that a Class 2 card is sitting there twiddling its virtual thumbs waiting for bits.
As a rule of thumb the class of a card is the sustained data transfer speed (DTS) in Megabytes per second (MBS)
CLASS 2 = 2 Megabytes per Second
CLASS 4 = 4 Megabytes per Second
CLASS 6 = 6 Megabytes per Second
CLASS 10 = 10 Megabytes per Second
