The best bulk micro sd cards is one common external storage device in daily life. For example, digital cameras and smart phones use SD cards. Although they are all SD cards, the functions of SD cards are different for different devices, such as some old cameras and MP3, the SD card is the main storage device. But for mobile phones, the SD card is used to expand the storage space.
So different devices need different SD cards, then how should SD cards be selected?
When it comes to choosing one SD card, we need to take the five points into consideration such physical size, storage capacity, purchase user, speed grade and real or fake capacity of the SD card.
Physical Size
The most commonly used SD card sizes are now divided into three main categories: standard SD cards, miniSD cards, and micro SD cards.
1. Standard SD card
The size of the standard SD card is 32*24*2.1mm, which is the largest of the three categories. The upper right corner of this type of SD card often has a corner design, which is generally used in digital cameras, far infrared cameras, drones, baby monitors, 3D printer and the other devices.
2. miniSD card
The size of this card is smaller than standard SD card, and few devices use it, which is gradually out of dated.
3. micro SD card
The micro SD card is our most common SD card, which is generally used by our mobile phones, dashcam, digital frame, Bluetooth speaker, tablets and so on.
Storage Capacity
SD card is used as storage device, the capacity is definitely one necessary parameter, everyone knows the SD card, but do you know that the SD card can be divided into SDSC card, SDHC card and SDXC card according to the capacity?
The difference between SDSC, SDHC and SDXC Card
The SDSC card is called standard capacity SD card and has a small capacity ranging from 1MB to 2GB. Usually it is briefly named as SD Card, and then it is seldom to find SDSC in most description.
SDHC literally means “Secure Digital High Capacity”, while SDXC is “Secure Digital Extended Capacity”.
The only real difference between the two is the range of data that can be stored. Among them, the SDHC type memory card has a storage capacity ranging from a minimum of 2GB to a maximum of 32GB, while the SDXC type card has a storage capacity ranging from 32GB to 2TB, but so far the largest and most stable SD card is 512GB.
