Editing SATA (section)

=== SATA Express <span class="anchor" id="SATA-EXPRESS"></span> ===
[[File:SATA Express connectors on a computer motherboard.jpg|thumb|upright=1.3|Two SATA Express connectors (light gray) on a [[computer motherboard]]; to the right of them are common SATA connectors (dark gray).]]
{{Main|SATA Express}}

[[SATA Express]], initially standardized in the SATA 3.2 specification,<ref>
{{cite web
 |url         = https://www.sata-io.org/sata-revision-32
 |title       = SATA Revision 3.2
 |publisher   = SATA-IO
 |access-date  = 2013-10-02
 |url-status     = live
 |archive-url  = https://archive.today/20130809202201/https://www.sata-io.org/sata-revision-32
 |archive-date = 2013-08-09
}}</ref> is an interface that supports either SATA or [[PCI Express]] storage devices. The host connector is backward compatible with the standard 3.5-inch SATA data connector, allowing up to two legacy SATA devices to connect.<ref>
{{cite web
 |url         = https://www.sata-io.org/sites/default/files/documents/MM_Nereus_Signage_Print_0719.pdf
 |title       = Connector Mating Matrix
 |access-date  = 2013-10-02
 |publisher   = [[SATA-IO]]
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20131004231134/https://www.sata-io.org/sites/default/files/documents/MM_Nereus_Signage_Print_0719.pdf
 |archive-date = 2013-10-04
}}</ref> At the same time, the host connector provides up to two [[PCI Express&nbsp;3.0]] lanes as a pure PCI Express connection to the storage device, allowing bandwidths of up to 2&nbsp;GB/s.<ref name="sata-3.2-announcement" /><ref name="sata-io-sata-express">
{{cite web
 |url         = https://www.sata-io.org/sata-express
 |title       = Enabling Higher Speed Storage Applications with SATA Express
 |year        = 2013
 |access-date  = 2013-10-02
 |publisher   = [[SATA-IO]]
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20140207141458/https://www.sata-io.org/sata-express
 |archive-date = 2014-02-07
}}</ref>

Instead of the otherwise usual approach of doubling the native speed of the SATA interface, PCI Express was selected for achieving data transfer speeds greater than 6&nbsp;Gbit/s. It was concluded that doubling the native SATA speed would take too much time, too many changes would be required to the SATA standard, and would result in a much greater power consumption when compared to the existing PCI Express bus.<ref>
{{cite web
 |url         = https://www.sata-io.org/sites/default/files/documents/SATA%20Express%20-%20CS%202013.pdf
 |title       = SATA Express: PCIe Client Storage
 |date        = 2013-06-25
 |access-date  = 2013-10-02
 |author      = Paul Wassenberg
 |publisher   = [[Serial ATA International Organization|SATA-IO]]
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20131004222635/https://www.sata-io.org/sites/default/files/documents/SATA%20Express%20-%20CS%202013.pdf
 |archive-date = 2013-10-04
}}</ref>

In addition to supporting legacy [[Advanced Host Controller Interface]] (AHCI), SATA Express also makes it possible for [[NVM Express]] (NVMe) to be used as the logical device interface for connected PCI Express storage devices.<ref>
{{cite web
 |url         = https://www.sata-io.org/sites/default/files/documents/NVMe%20and%20AHCI%20as%20SATA%20Express%20Interface%20Options%20-%20Whitepaper_.pdf
 |title       = AHCI and NVMe as Interfaces for SATA Express Devices – Overview
 |access-date  = 2013-10-02
 |author      = Dave Landsman
 |publisher   = SanDisk
 |url-status     = live
 |archive-url  = https://web.archive.org/web/20131005000700/https://www.sata-io.org/sites/default/files/documents/NVMe%20and%20AHCI%20as%20SATA%20Express%20Interface%20Options%20-%20Whitepaper_.pdf
 |archive-date = 2013-10-05
}}</ref>

As M.2 form factor, described below, achieved much larger popularity, SATA Express is considered as a failed standard and dedicated ports quickly disappeared from motherboards.

{{Clear}}