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SD cards
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.. contents::
:local:
Standards
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Acronym Capacity FS Spec Compatibility Name
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SD 128MB-2GB FAT16 SD, SDHC, SDXC
SDHC 4-32 GB FAT32 SDA 2.0 SDHC, SDXC High Capacity
SDXC 64GB-2TB exFAT SDA 3.0 SDXC Extended Capacity
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Ultra High Speed, Phase I (UHS-I):
* 50MB/s (UHS-50)
* 104MB/s (UHS-104)
Ultra High Speed Phase II (UHS-II):
* 156MB/s
* 312MB/s
Speed
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SD Speed Class:
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Class Min Speed
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2 2MB/s
4 4MB/s
6 6MB/s
8 8MB/s
10 10MB/s
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UHS Speed Class:
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Class Min Speed
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1 10MB/s
3 30MB/s
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https://support-in.wd.com/app/answers/detailweb/a_id/36273/~/specifications-and-compatibility-for-sd%2Fsdhc%2Fsdxc-memory-cards
Specifications and Compatibility for SD/SDHC/SDXC Memory Cards.