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===CF+ and CompactFlash specification revisions=== When CompactFlash was first being standardized, even full-sized hard disks were rarely larger than 4 GB in size, and so the limitations of the ATA standard were considered acceptable. However, CF cards manufactured after the original Revision 1.0 specification are available in capacities up to 512 GB. While the current revision 6.0 works in [P]ATA mode, [[#CFast|future revisions]] are expected to implement [[SATA]] mode. * CompactFlash Revision 1.0 (1995), 8.3 MB/s (PIO mode 2), support for up to 128 GB storage space. * CompactFlash+ aka CompactFlash I/O (1997) * CF+ and CompactFlash Revision 2.0 (2003) added an increase in speed to 16.6 MB/s data-transfer (PIO mode 4). At the end of 2003, [[Direct memory access|DMA]] 33 transfers were added as well, available since mid-2004. * CF+ and CompactFlash Revision 3.0 (2004) added support for up to a 66 MB/s data transfer rate ([[UDMA]] 66), 25 MB/s in PC Card mode, added password protection, along with a number of other features. CFA recommends usage of the FAT32 filesystem for storage cards larger than 2 GB. * CF+ and CompactFlash Revision 4.0 (2006) added support for IDE Ultra DMA Mode 6 for a maximum data transfer rate of 133 MB/s (UDMA 133). * CF+ and CompactFlash Revision 4.1 (2007) added support for Power Enhanced CF Storage Cards. * CompactFlash Revision 5.0 (2010) added a number of features, including 48-bit addressing (supporting 128 petabyte of storage), larger block transfers of up to 32 megabytes, quality-of-service and video performance guarantees, and other enhancements<ref>{{Cite web|url=http://compactflash.org/2010/cfa-announces-availability-of-cf50/|archiveurl=https://web.archive.org/web/20101122170442/http://compactflash.org/2010/cfa-announces-availability-of-cf50/|url-status=dead|title=CFA Announces Availability of the New CF5.0 Specification |date=February 22, 2010 |website=CompactFlash Association|archivedate=November 22, 2010}}</ref> * CompactFlash Revision 6.0 (November 2010) added UltraDMA Mode 7 (167 MB/s), ATA-8/ACS-2 sanitize command, [[Trim (computing)|TRIM]] and an optional card capability to report the [[operating temperature]] range of the card.<ref>{{Cite web|url=http://compactflash.org/2010/cf-6-0-introduces-industry-leading-performance-and-feature-enhancements/|archiveurl=https://web.archive.org/web/20101121233926/http://compactflash.org/2010/cf-6-0-introduces-industry-leading-performance-and-feature-enhancements/|url-status=dead|title=CF 6.0 Introduces Performance and Feature Enhancements |date=November 18, 2010 |website=CompactFlash Association |archivedate=November 21, 2010}}</ref>
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