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what's a SD card
Differences between a SD card and a TF card

By Zoe Cao on Oct 23, 2020

SD card is much larger than the TF card. TF card (full name TransFlash) is currently the smallest memory card of independent products. There is an interface under the SD card sleeve, and a TF card can be inserted into it. In this way, the micro SD card, or TF card, becomes an SD card.

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What is U1 and U3 micro SD card?
What is U1 and U3 micro SD card?

By Gloross Collaborator on Jul 23, 2020

Both U1 and U3 are graded for reading and writing speed of TF or micro SD cards, and the two are mainly different in reading and writing speed and compatibility.

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