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Do RMe Series PSUs have a -12V Rail?

The -12V rail, while historically present in PSUs, has become less important in modern PCs. Originally, the -12V rail was used to provide power to certain legacy components such as serial ports and older audio hardware, which required negative voltage levels for communication. The -12V rail was most popularly used in RS232 serial communication, one of the pins of the original PCI (not PCIe) slot and was used as a reference voltage in some audio hardware.

1024px-Serial_port_(9-pin)

An example of a serial port.

Why don't RMe PSUs have a -12v Rail?

However, with the evolution of PC hardware and the phasing out of older technologies, the need for the -12V rail has diminished significantly. Considering -12V became an optional integration with the introduction of ATX 3.0 PSUs and newer PSU design guides from Intel, most modern motherboards and components no longer require or utilize the -12V rail. As a result of the -12V rail being redundant, our RMe Series PSUs do not have one equipped. Users may find that if they test specifically for -12V, a failure status may be given due to the fact there is no -12V rail. This failure is nothing to worry about, though, as the chances of your build containing anything old enough to require this rail are slim.

RMe-Series_Main_Visual

With the increased power demands of certain components such as graphics cards, we prioritized designing the RMe Series to be equipped with a stable and reliable 12V rail, and given that the -12v Rail is largely obsolete, we've omitted it entirely.

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