Numbers On Sd Card Mean
SD cards come in many shapes, capacities and classes. But what does it mean? And will one SD card work in all of your devices? Find out what you need to know by reading on. Physical Size There are three types of SD card sizes available: regular SD cards, mini SD cards and micro SD cards. The normal SD cards (referred to simply as an SD card) measures up at 32 x 24 mm. The mini SD card, or card, is the next smallest at 21.5 x 20.0 mm.
The BEST SD Card for VIDEO & What Do The Numbers Mean? (Sony a7 III & GH5) Explaining the meaning of the numbers, classes, and speeds on SD Card Labels & figuring out which SD card is the best to get for 4K video shooting.
Lastly, there is the card or micro SD card, which is 11.00 x 15.00 mm. Obviously, the size of the slot dictates which cards the device will accept. 
Micro Sd Card
For example, cell phones are designed to accept microSD cards, while laptops and printers might accept larger SD cards or multiple SD cards. Either way, you can purchase an adapter that lets you use a miniSD card in a regular sized SD card slot, a micro SD card in a regular SD card slot, etc.
The adapter is shaped like the target SD card size and the smaller card is simply inserted into it before sliding it into the computer or device. Capacity and Compatibility The next attribute to pay attention to for SD cards is the capacity.