MostWantedSoulRider :
Im_legend :
pic-e connectors are those connectorswhich are connected with graphic card to give them extra power for fan or the graphic card demands more power than pci-e can give pci-e connectors are 6 pin or 8 pin connectors they can only be connected to those graphic card whcih are powerfull like gtx titan or r9 290
A power supply rail or voltage rail refers to a single voltage provided by a power supply unit (PSU)The +12 V supply was used primarily to operate motors such as in disk drives and cooling fans. As more peripherals were added, more power was delivered on the 12 V rail. The −12 V rail was used primarily to provide the negative supply voltage to the RS-232 serial ports
Thanks for making me to know the basic. What is RS-232 serial port? And why negative supply voltage?
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What is the difference between pci-e and pci-e connectors?
RS-232 is a standard for serial communication transmission of data. It formally defines the signals connecting between a DTE (data terminal equipment) such as a computer terminal, and a DCE (data circuit-terminating equipment, originally defined as data communication equipment[1]), such as a modem. The RS-232 standard is commonly used in computer serial ports. The standard defines the electrical characteristics and timing of signals, the meaning of signals,
for more info check it out
http://en.wikipedia.org/wiki/RS-232
The supply produces a voltage difference. Every component needs "both positive & negative"(a voltage difference) voltage to function. Either the positive or negative can be connected to ground, and is then (only labelled) 0.every component needs a positive or a negative and a neutral (ground) path.
PCIe, is a high-speed serial computer expansion bus standard designed to replace the older PCI, PCI-X, and AGP bus standards. so it is basically a slot in which graphic card are connected
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pci-e connectors are used to give graphic card power because latest graphic card cant get enough power from pci-e slot