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SD standard – Up to 2GB SD memory card using FAT 12 and 16 file systems |
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SDHC standard – over 2GB-32GB SDHC memory card using FAT32 file system |
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SDXC standard – over 32GB-2TB SDXC memory card using exFAT file system |
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SDUC standard – over 2TB-128TB SDUC memory card using exFAT file system |
SD Standard | SDHC Standard | SDXC Standard | SDUC Standard | ||
Capacity | up to 2GB | more than 2GB
up to 32GB |
more than 32GB
up to 2TB |
more than 2TB
up to 128TB |
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File System | FAT 12, 16 | FAT 32 | exFAT | exFAT | |
SD Logo | ![]() |
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Form Factor Size | SD | 32 x 24 x 2.1 mm | |||
microSD | 11 x 15 x 1.0 mm | ||||
Speed Classes |
NS mode | C2, C4, C6 | |||
HS mode | C2, C4, C6, C10,
V6, V10 |
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UHS-I
mode |
— | C2, C4, C6, C10
U1, U3 V6, V10, V30 |
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UHS-II
mode |
— | C4, C6, C10
U1, U3 V6, V10, V30, V60, V90 |
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UHS-III
mode |
— | C4, C6, C10
U1, U3 V6, V10, V30, V60, V90 |