FlexATX

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Computer form factors
Listed by PCB size (mm)
WTX (356×425) AT (350×305) Baby-AT (330×216) BTX (325×267) ATX (305×244) SSI CEB (305x267) EATX (Extended) (305×330) LPX (330×229) microBTX (264×267) NLX (254×228) Ultra ATX (367×244) microATX (244×244) DTX (244×203) FlexATX (229×191) Mini-DTX (203×170) EBX (203×146) microATX (min.) (171×171) Mini-ITX (170×170) EPIC (Express) (165×115) Mini ATX (150×150) ESM (149×71) Nano-ITX (120×120) COM Express (125×95) ESMexpress (125×95) ETX/XTX (114×95) Pico-ITX (100×72) PC/104 (-Plus) (96×90) ESMini (95×55) SMARC (82×80) Qseven (70×70) mobile-ITX (60×60) CoreExpress (58×65)
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FlexATX is a motherboard form factor derived from ATX. The specification was released in 1999 by Intel as an addendum to the microATX specification. It uses a subset of the motherboard mounting holes required for microATX and the same I/O plate system as ATX and microATX.

FlexATX specifies that a motherboard be no larger than 9 × 7.5 in (229 × 191 mm), and can have no more than four expansion slots.

The term is used also for the form factor of a PSU that is smaller than a standard ATX PSU and is used in small cases that host a FlexATX or Mini ITX motherboard or in thin rackmount servers such as 1U racks.^[1]

ATX motherboard size comparison; rear is on left.

FlexATX (229 × 191 mm)

MicroATX/Embedded ATX (244 × 244 mm)

Mini ATX (284 × 208 mm)

Standard ATX (305 × 244 mm)

Extended ATX (EATX) (305 × 330 mm)

Workstation ATX (WTX) (356 × 425 mm)

References

↑ "List of computer PSU form factors". Retrieved 2012-10-18.

External links

FlexATX motherboard specification

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