Qseven

The name comes from the word "quadratic" due to the square shape of the original module, 70 mm on a side. Qseven was specified by Congatec, MSC and SECO in July 2008 as an independent standard for industry-level applications.{{Cite news |date=2008-09-29 |title=Making the transition to the new Qseven Computer-On-Module standard |url=https://www.embedded.com/making-the-transition-to-the-new-qseven-computer-on-module-standard/ |access-date=2021-11-10 |work=Embedded.com |author-first=Christian |author-last=Eder}}{{Cite web |last=S.p.A |first=SECO |title=Celebrating 15 years of Qseven®: a journey into the history of embedded innovation |url=https://www.seco.com/blog/details/celebrating-15-years-of-qsevenr-a-journey-into-the-history-of-embedded-innovation?utm_source=chatgpt.com |access-date=2025-04-02 |website=SECO S.p.A. |language=en}}{{Cite web |title=Foxconn Technology Group joins Qseven Consortium |url=https://www.electronicspecifier.com/news/analysis/foxconn-technology-group-joins-qseven-consortium |access-date=2025-04-02 |website=www.electronicspecifier.com |language=en}} Other companies based in Europe such as Kontron adopted the standard, but after a few years it had not yet been popular in the USA.{{Cite web |url=http://www.embeddedintel.com/special_features.php?article=1172 |date=2010 |url-status=dead |archive-date=2011-07-10 |archive-url=https://web.archive.org/web/20110710185427/http://www.embeddedintel.com/special_features.php?article=1172 |work= Embedded Intel Solutions |title=Is America Ready for Qseven? |author-first=Christian |author-last=Eder |access-date=2021-11-10}}

{{anchor|SGET}}The Qseven specification is hosted by the Standardization Group for Embedded Technologies (SGeT), which took over from the original Qseven consortium in 2013. The revision 2.0 was released 9 September 2012, and 2.1 on 25 February 2016.{{Cite web |title=Qseven specification |date=2016-02-25 |url=https://sget.org/wp-content/uploads/2018/09/Qseven-Spec_2.1.pdf |access-date=2021-11-10}}

The Qseven design guide provides information for designing a custom system carrier board for Qseven modules. It includes reference schematics for the external circuitry required to implement various peripheral functions. It also explains how to extend the supported buses and how to add additional peripherals and expansion slots to a Qseven-based system.

It's available from the Qseven consortium webpage.

Since the release of Specification 1.20 (10 September 2010) Qseven modules can be based on x86 or ARM architectures.{{Cite web |url=https://www.congatec.com/us/technologies/qseven.html |title=congatec.com: Qseven - the Mobile COM Definition |website=www.congatec.com |access-date=2019-02-08}}

The Qseven specification defines a rich set of legacy-free interfaces. Older interfaces like PCI, ISA, RS-232 or EIDE are not supported.

• 4× PCI Express ×1 lanes
• 2× SATA
• 8× USB 2.0
• 1× 1000BaseT Ethernet
• 1× SDIO 4-bit
• Low-voltage differential signaling (LVDS) 2× 24-bit
• SDVO / HDMI / DisplayPort (shared)
• HDA (High Definition Audio)
• I²C Bus
• Low Pin Count bus
• CAN bus (Controller–area network)
• Serial Peripheral Interface (SPI) bus

• 70 mm × 70 mm;
• 70 mm × 40 mm.{{Cite web |url=http://www.sget.org/standards/qseven |title=Qseven |website=SGeET website |access-date=2021-11-10}}

Qseven uses one 230 pin MXM2 SMT edge connector to connect all power and signal lanes to the carrier board. This connector is available from multiple vendors at different heights (5.5 mm and 7.8 mm).

• ETX
• XTX
• COM Express
• Smart Mobility Architecture (SMARC) another specification from the same group

{{Reflist}}

• [http://rtcmagazine.com/articles/view/101058 RTC Magazine: Atom-Based Qseven Module Addresses the Portable Device Market]

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{{Computer form factors}}

Category:Computer hardware standards

Category:Motherboard form factors