What Type Of File System Is Used By Sdxc Memory Cards

SD/SDHC/SDXC Specifications and Compatibility

What SD (or microSD) cards are uniform with my host device? How do I choose the all-time carte for my host device?

There are three main types in the SD memory carte family unit. SD, SD High Capacity (SDHC™), and SD Extended Capacity (SDXC™). This article details the different specifications of all three types of SD memory cards and the speed course ratings and compatibilities that are different with each type.

Speed Class & UHS Speed Course Ratings
Compatibility Summary

Additional Reference: SD Assocation Consumer Information

SD capacities range from 128MB to 2GB

Default Format: FAT16

SD cards will work in all host devices that support SD, SDHC, or SDXC

SDHC Logo
SD Loftier Capacity (SDHC™) bill of fare is an SD™ memory card based on the SDA 2.0 specification.

SDHC capacities range from 4GB to 32GB

Default Format: FAT32

Because SDHC works differently than standard SD cards, this format is Not backwards compatible with host devices that simply take SD (128MB - 2GB) cards. Virtually readers and host devices built after 2008 should exist SDHC uniform.

To ensure compatibility, look for the SDHC logo on cards and host devices (cameras, camcorders, etc.)

SDXC Logo
SD Extended Capacity (SDXC™) card is an SD™ memory carte based on the SDA 3.0 specification.

SDXC capacities range from 64GB to 2TB

Default Format: exFAT

Because SDXC uses a different file system chosen exFAT and it works differently than standard SD cards, this format is Non backwards compatible with host devices that simply have SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Near host devices built afterwards 2010 should be SDXC compatible.

To ensure compatibility, look for the SDXC logo on cards and host devices (cameras, camcorders, etc.).

Note: Internal card readers on laptops up to year 2008 may NOT back up SDXC cards. SDXC cards will work in SDHC compatible readers (non SD readers) if the computer OS supports exFAT.

For more information on exFat come across: Operating Systems that support the exFAT File Organisation

Ultra High Speed, Stage I (UHS-I) bus design for SDHC and SDXC cards was added in SD spec 3.0. This is a blueprint enhancement to increase the performance of SDHC/SDXC cards.

UHS-I specification defines two autobus compages options for upward to 50MB/s (UHS-fifty) and 104MB/due south (UHS-104) information transfer rates. These are theoretical maximum limits and bodily maximum performance for a specific card is defined on it label or in advertising.

UHS is an enhancement to the original SD interface specifications. Host devices volition obtain the UHS maximum speed when both the card and host device support UHS. Otherwise, the host device and card will employ the slower SD maximum speed obtainable.

At that place is no compatibility problem using a UHS card with a non-UHS device.

Ultra High Speed Phase 2 (UHS-2) bus design for SDHC and SDXC was added in SD spec four.0. This is an additional design enhacement with connector interface modifications to increase performance.

UHS-II specification defines jitney architecture for options of 156MB/s and 312MB/south. Manufacturers implemented the 312MB/due south pick in memory cards. These are theoretical maximum limits and actual maximum functioning for a specific card is divers on the label or in advertizement.

Host devices will obtain the maximum UHS-II speed when both the card and the host device support UHS-2. Otherwise, the host device and carte du jour will utilise the highest compatible UHS-I or SD bus speed.

At that place is no compatibility problem using a USH-II card in a UHS-I or non-UHS device.

Speed Form & UHS Speed Course Rating
Speed grade ratings define a minimum guaranteed speed of SDHC/SDXC cards. Speed course rating is important for HD video mode or camcorders, where the device is actually saving a steady stream of data. The resolution and format of the video determines the amount of steady stream data. You lot should consult your camera user manual for minimum speed form requirements for Hd video modes.

Speed Form (SD Charabanc)

Class	Minimum Speed
2	2MB/due south
4	4MB/s
6	6MB/s
8	8MB/s
10	10MB/s

UHS Speed Form (UHS Bus)

UHS Class	Minimum Speed
i	10MB/south
3	30MB/s

For a more detailed explanation of speed class come across: Difference between Speed Form, UHS Speed Class, and Speed Ratings...
SD Association: Speed Choices

Compatibility Summary
The chart below shows the host device and the memory cards supported.

SDXC cards and host devices
- SDXC retentiveness cards can But be used with SDXC host devices.
- SDXC retentiveness cards volition Non work with SD / SDHC host devices.

Boosted info on SDXC cards and host devices
- SDXC host devices can use and support SD, SDHC and SDXC memory cards.
- SDHC host devices can employ and back up both SD and SDHC memory cards.
- SDHC retention cards tin can exist used with SDHC and SDXC host devices.

What Type Of File System Is Used By Sdxc Memory Cards,

Source: https://kb.sandisk.com/app/answers/detail/a_id/2520/~/sd%2Fsdhc%2Fsdxc-specifications-and-compatibility#:~:text=Because%20SDXC%20uses%20a%20different,SDHC%20(4GB%20to%2032GB).

Posted by: reavesothopel.blogspot.com