The keyed ATX connector becomes 2 by 12 for a 24-pin power connection. As BTX there is a dual channel 12VDC, 4 pin as well as a 2 by 2 (4 pin) square connector that has 3.3 and 5DVC with separate grounds called a peripheral connector. This connector is expected to find its way into the BTX specifications explained previously. It is currently omitted due to further tightening of the specification. (Intel does not what to have the issue of vagueness that occurred with ATX). ATX12V is the first power supply that lays out the 5-pin (and very thin) SATA power connector, as specified by http://www.serialata.org
In a nod to the safety and environment section of A+, ATX12V power supplies cannot use cadmium, or mercury. CFCs and HFCs in the design or creation process are prohibited.
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CertiGuide to A+ (A+ 4 Real) (http://www.CertiGuide.com/apfr/) on CertiGuide.com
Version 1.0 - Version Date: March 29, 2005
Adapted with permission from a work created by Tcat Houser et al.
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