It affects the amount of data stored. The larger the capacity, the more data can be stored, which is more convenient. Generally, MB and GB are used as the unit. MB memory cards have been eliminated. Currently, there are 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, and so on.
It refers to the data transmission speed of a memory card when data is being written or read. The same card is used in different mobile devices and may show speed differences.
The Secure Digital card, referred to as the SD card, is a security card, which is superior to CF cards and earlier SM cards in terms of security performance. It uses encryption to ensure the security and confidentiality of data.
The shape is exactly like chewing gum, the length is the same as that of ordinary AA batteries , and there are two types of blue bars and white bars. The white bar memory stick has the MagicGate copyright protection function and is often used in media players.
PCIe flash card
Flash card is a memory that uses flash memory technology to store electronic information. It is generally used in digital cameras , handheld computers, MP3 and other small digital products.