It authentic electrically identical cards in abate sizes: miniSD and microSD (originally called TransFlash). Abate cards are accessible in beyond slots through use of a acquiescent adapter. By comparison, Reduced Admeasurement MultiMediaCards (RS-MMCs) are artlessly beneath MMCs and can be acclimated in MMC slots by use of a concrete extender.
It authentic higher-capacity cards, some with faster speeds and added capabilities: SDHC (Secure Agenda High Capacity) and SDXC (Secure Agenda eXtended Capacity). These cards redefine the interface so that they cannot be acclimated in earlier host devices.
It authentic an SDIO agenda ancestors that provides input-output functions and may aswell accommodate anamnesis functions. These cards are alone absolutely anatomic in host accessories advised to abutment their input-output functions.
edit Concrete size
Size allegory of families: SD, miniSD, microSD
The SD agenda blueprint defines three concrete sizes. The SD and SDHC families are accessible in all three sizes, but the SDXC ancestors is not accessible in the mini size, and the SDIO ancestors is not accessible in the micro size.
Standard size
SD (SDSC), SDHC, SDXC, SDIO
32 mm × 24 mm × 2.1 mm
32 mm × 24 mm × 1.4 mm (as attenuate as MMC) for Attenuate SD (rare)
Mini size
miniSD, miniSDHC, miniSDIO
21.5 mm × 20 mm × 1.4 mm
Micro size
The microSD anatomy agency is the aboriginal anamnesis agenda architecture currently available.citation needed
microSD, microSDHC, microSDXC
15 mm × 11 mm × 1.0 mm
edit SDHC
16GB SDHC Class 6
The Secure Agenda High Accommodation (SDHC) format, authentic in Version 2.0 of the SD specification, supports cards with capacities up to 32 GB.1 The SDHC brand is accountant to ensure compatibility.6
SDHC cards are physically and electrically identical to standard-capacity SD cards (SDSC). The aloft affinity issues amid SDHC and SDSC cards are the redefinition of the Card-Specific Data (CSD) annals in Version 2.0 (see below), and the actuality that SDHC cards are alien preformatted with the FAT32 book system.
Host accessories that acquire SDHC cards are appropriate to acquire SDSC cards.1 However, host accessories advised for SDSC do not admit SDHC or SDXC anamnesis cards, although some accessories can do so through a firmware upgrade.7 Earlier operating systems crave patches to abutment SDHC. For instance, Microsoft Windows XP afore SP3 requires a application to abutment admission to SDHC cards.8 Windows Vista SP1 aswell requires a after account pack.910
edit SDXC
The Secure Agenda Extended Accommodation (SDXC) architecture supports cards up to 2 TB (2048 GB), compared to a absolute of 32 GB for SDHC cards in the SD 2.0 specification.
History
SDXC was appear at Customer Electronics Appearance (CES) 2009 (January 7–10, 2009). At the aforementioned show, SanDisk and Sony aswell appear a commensurable Anamnesis Stick XC another with the aforementioned 2 TB best as SDXC,11 and Panasonic appear affairs to aftermath 64 GB SDXC cards.12
On March 6, 2009, Pretec alien the aboriginal SDXC card,13 a 32 GB agenda with a read/write acceleration of 400 Mbit/s. But it was not until aboriginal 2010 that accordant host accessories came assimilate the market, including Sony's Handycam HDR-CX55V camcorder, Canon's EOS Rebel T2i Agenda SLR camera,14 a USB agenda clairvoyant from Panasonic, and an chip SDXC agenda clairvoyant from JMicron.15 The ancient laptops to accommodate SDXC agenda readers relied on a USB 2.0 bus, which does not acquire the bandwidth to abutment SDXC at abounding speed.16
Also in aboriginal 2010, bartering SDXC cards appeared from Toshiba (64 GB),1718 Panasonic (64 GB and 48 GB),19 and SanDisk (64 GB).20 In aboriginal 2011, Centon Electronics, Inc. (64 GB and 128 GB) and Lexar (128 GB)21 began shipment SDXC cards rated at Acceleration Class 10. Pretec offered cards from 8 GB to 128 GB rated at Acceleration Class 16.22
In September 2011, SanDisk appear a 64 GB microSDXC card.23 Kingmax appear a commensurable artefact in 2011.24
Compatibility with SDHC
SDXC host accessories acquire all antecedent families of SD anamnesis cards.25 Conversely, SDHC host accessories will acquire SDXC cards that chase Version 3.0, back the interface is identical,3 but the afterward issues may affect usability:
SDXC cards are pre-formatted with Microsoft's proprietary and patented exFAT book system, which the host accent ability not support. Back Microsoft does not broadcast the blueprint of exFAT and its use requires a non-free license, abounding another or earlier operating systems do not abutment exFAT for abstruse or acknowledged reasons. The use of exFAT on some SDXC cards may cede SDXC clashing as a accepted barter medium, as an SDXC agenda that uses exFAT would not be accessible in all host devices. Back the FAT32 book arrangement supports volumes up to the SDXC's best abstract accommodation of 2 TB as well, a user could reformat an SDXC agenda to use FAT32 for greater portability amid computers (see below), but customer articles such as agenda cameras and camcorders do not commonly accommodate the best to architecture SDXC cards as FAT32 nor do they acquire FAT32-reformatted SDXC cards.
An SDHC host accent will not analysis the new adequacy $.25 authentic for SDXC cards. It will accordingly not be able to use the new appearance of SDXC, such as alteration speeds aloft UHS104.26
Host Operating Arrangement support
Microsoft Windows versions that abutment SDXC are: Windows 7, Windows Vista SP1+,3 Windows XP SP2 or SP3 with KB955704,27 Windows Server 2008 SP1+, Windows Server 2003 SP2 or SP3 with KB955704, and Windows CE 6.0 and higher.
Apple Mac OS X versions that abutment SDXC cards and exFAT are Mac OS X Snow Leopard 10.6.5 or after including OS X Lion 10.7.2829
BSD and Linux systems that abutment SDHC cards aswell abutment SDXC cards that accommodate a accordant book system, but they commonly do not abutment the proprietary exFAT book arrangement that is installed on SDXC cards, because of apparent issues. A bartering Linux disciplinarian is accessible for the exFAT book system.30 The user may reformat the agenda to accommodate a altered book arrangement (see below).
edit SDIO
Camera application the SDIO interface to affix to some HP iPAQ devices
A SDIO (Secure Agenda Input Output) agenda is an addendum of the SD blueprint to awning I/O functions. Host accessories that abutment SDIO (typically PDAs like the Palm Treo, but occasionally laptops or adaptable phones) can use the SD aperture to abutment GPS receivers, modems, barcode readers, FM radio tuners, TV tuners, RFID readers, agenda cameras, and interfaces to Wi-Fi, Bluetooth, Ethernet, and IrDA. Abounding added SDIO accessories acquire been proposed, but it is now added accepted for I/O accessories to affix application the USB interface.
SDIO cards abutment a lot of of the anamnesis commands of SD cards. SDIO cards can be structured as 8 analytic cards, although currently, the archetypal way that an SDIO agenda uses this adequacy is to anatomy itself as one I/O agenda and one anamnesis card.
Host abutment for SDIO
The SDIO and SD interfaces are mechanically and electrically identical. Host accessories congenital for SDIO cards about acquire SD anamnesis cards after I/O functions. However, the about-face is not true, because host accessories charge acceptable drivers and applications to abutment the card's I/O functions. For example, an HP SDIO camera usually does not plan with PDAs that do not account it as an accessory. Inserting an SDIO agenda into any SD aperture causes no concrete accident nor disruption to the host device, but users may be balked that the SDIO agenda does not action absolutely if amid into a acutely accordant slot. (Bluetooth accessories display commensurable affinity issues, although to a bottom admeasurement acknowledgment to connected Bluetooth profiles.)
It authentic higher-capacity cards, some with faster speeds and added capabilities: SDHC (Secure Agenda High Capacity) and SDXC (Secure Agenda eXtended Capacity). These cards redefine the interface so that they cannot be acclimated in earlier host devices.
It authentic an SDIO agenda ancestors that provides input-output functions and may aswell accommodate anamnesis functions. These cards are alone absolutely anatomic in host accessories advised to abutment their input-output functions.
edit Concrete size
Size allegory of families: SD, miniSD, microSD
The SD agenda blueprint defines three concrete sizes. The SD and SDHC families are accessible in all three sizes, but the SDXC ancestors is not accessible in the mini size, and the SDIO ancestors is not accessible in the micro size.
Standard size
SD (SDSC), SDHC, SDXC, SDIO
32 mm × 24 mm × 2.1 mm
32 mm × 24 mm × 1.4 mm (as attenuate as MMC) for Attenuate SD (rare)
Mini size
miniSD, miniSDHC, miniSDIO
21.5 mm × 20 mm × 1.4 mm
Micro size
The microSD anatomy agency is the aboriginal anamnesis agenda architecture currently available.citation needed
microSD, microSDHC, microSDXC
15 mm × 11 mm × 1.0 mm
edit SDHC
16GB SDHC Class 6
The Secure Agenda High Accommodation (SDHC) format, authentic in Version 2.0 of the SD specification, supports cards with capacities up to 32 GB.1 The SDHC brand is accountant to ensure compatibility.6
SDHC cards are physically and electrically identical to standard-capacity SD cards (SDSC). The aloft affinity issues amid SDHC and SDSC cards are the redefinition of the Card-Specific Data (CSD) annals in Version 2.0 (see below), and the actuality that SDHC cards are alien preformatted with the FAT32 book system.
Host accessories that acquire SDHC cards are appropriate to acquire SDSC cards.1 However, host accessories advised for SDSC do not admit SDHC or SDXC anamnesis cards, although some accessories can do so through a firmware upgrade.7 Earlier operating systems crave patches to abutment SDHC. For instance, Microsoft Windows XP afore SP3 requires a application to abutment admission to SDHC cards.8 Windows Vista SP1 aswell requires a after account pack.910
edit SDXC
The Secure Agenda Extended Accommodation (SDXC) architecture supports cards up to 2 TB (2048 GB), compared to a absolute of 32 GB for SDHC cards in the SD 2.0 specification.
History
SDXC was appear at Customer Electronics Appearance (CES) 2009 (January 7–10, 2009). At the aforementioned show, SanDisk and Sony aswell appear a commensurable Anamnesis Stick XC another with the aforementioned 2 TB best as SDXC,11 and Panasonic appear affairs to aftermath 64 GB SDXC cards.12
On March 6, 2009, Pretec alien the aboriginal SDXC card,13 a 32 GB agenda with a read/write acceleration of 400 Mbit/s. But it was not until aboriginal 2010 that accordant host accessories came assimilate the market, including Sony's Handycam HDR-CX55V camcorder, Canon's EOS Rebel T2i Agenda SLR camera,14 a USB agenda clairvoyant from Panasonic, and an chip SDXC agenda clairvoyant from JMicron.15 The ancient laptops to accommodate SDXC agenda readers relied on a USB 2.0 bus, which does not acquire the bandwidth to abutment SDXC at abounding speed.16
Also in aboriginal 2010, bartering SDXC cards appeared from Toshiba (64 GB),1718 Panasonic (64 GB and 48 GB),19 and SanDisk (64 GB).20 In aboriginal 2011, Centon Electronics, Inc. (64 GB and 128 GB) and Lexar (128 GB)21 began shipment SDXC cards rated at Acceleration Class 10. Pretec offered cards from 8 GB to 128 GB rated at Acceleration Class 16.22
In September 2011, SanDisk appear a 64 GB microSDXC card.23 Kingmax appear a commensurable artefact in 2011.24
Compatibility with SDHC
SDXC host accessories acquire all antecedent families of SD anamnesis cards.25 Conversely, SDHC host accessories will acquire SDXC cards that chase Version 3.0, back the interface is identical,3 but the afterward issues may affect usability:
SDXC cards are pre-formatted with Microsoft's proprietary and patented exFAT book system, which the host accent ability not support. Back Microsoft does not broadcast the blueprint of exFAT and its use requires a non-free license, abounding another or earlier operating systems do not abutment exFAT for abstruse or acknowledged reasons. The use of exFAT on some SDXC cards may cede SDXC clashing as a accepted barter medium, as an SDXC agenda that uses exFAT would not be accessible in all host devices. Back the FAT32 book arrangement supports volumes up to the SDXC's best abstract accommodation of 2 TB as well, a user could reformat an SDXC agenda to use FAT32 for greater portability amid computers (see below), but customer articles such as agenda cameras and camcorders do not commonly accommodate the best to architecture SDXC cards as FAT32 nor do they acquire FAT32-reformatted SDXC cards.
An SDHC host accent will not analysis the new adequacy $.25 authentic for SDXC cards. It will accordingly not be able to use the new appearance of SDXC, such as alteration speeds aloft UHS104.26
Host Operating Arrangement support
Microsoft Windows versions that abutment SDXC are: Windows 7, Windows Vista SP1+,3 Windows XP SP2 or SP3 with KB955704,27 Windows Server 2008 SP1+, Windows Server 2003 SP2 or SP3 with KB955704, and Windows CE 6.0 and higher.
Apple Mac OS X versions that abutment SDXC cards and exFAT are Mac OS X Snow Leopard 10.6.5 or after including OS X Lion 10.7.2829
BSD and Linux systems that abutment SDHC cards aswell abutment SDXC cards that accommodate a accordant book system, but they commonly do not abutment the proprietary exFAT book arrangement that is installed on SDXC cards, because of apparent issues. A bartering Linux disciplinarian is accessible for the exFAT book system.30 The user may reformat the agenda to accommodate a altered book arrangement (see below).
edit SDIO
Camera application the SDIO interface to affix to some HP iPAQ devices
A SDIO (Secure Agenda Input Output) agenda is an addendum of the SD blueprint to awning I/O functions. Host accessories that abutment SDIO (typically PDAs like the Palm Treo, but occasionally laptops or adaptable phones) can use the SD aperture to abutment GPS receivers, modems, barcode readers, FM radio tuners, TV tuners, RFID readers, agenda cameras, and interfaces to Wi-Fi, Bluetooth, Ethernet, and IrDA. Abounding added SDIO accessories acquire been proposed, but it is now added accepted for I/O accessories to affix application the USB interface.
SDIO cards abutment a lot of of the anamnesis commands of SD cards. SDIO cards can be structured as 8 analytic cards, although currently, the archetypal way that an SDIO agenda uses this adequacy is to anatomy itself as one I/O agenda and one anamnesis card.
Host abutment for SDIO
The SDIO and SD interfaces are mechanically and electrically identical. Host accessories congenital for SDIO cards about acquire SD anamnesis cards after I/O functions. However, the about-face is not true, because host accessories charge acceptable drivers and applications to abutment the card's I/O functions. For example, an HP SDIO camera usually does not plan with PDAs that do not account it as an accessory. Inserting an SDIO agenda into any SD aperture causes no concrete accident nor disruption to the host device, but users may be balked that the SDIO agenda does not action absolutely if amid into a acutely accordant slot. (Bluetooth accessories display commensurable affinity issues, although to a bottom admeasurement acknowledgment to connected Bluetooth profiles.)
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