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PS-ON Signal is a pin on a 20-pin or 24-pin ATX-specified power connector used to turn a personal computer power supply unit on/off. The PS_ON pin is normally pulled high in an open-circuit, but will turn on the power supply when it is pulled low, by shorting it to the common signal (COM). Conversely the power supply is turned off when the PS ...
An ATX power supply provides a number of peripheral power connectors and (in modern systems) two connectors for the motherboard: an 8-pin (or 4+4-pin) auxiliary connector providing additional power to the CPU and a main 24-pin power supply connector, an extension of the original 20-pin version. 20-pin Molex 39-29-9202 at the motherboard. 20-pin ...
While an ATX power supply is connected to the mains supply, it always provides a 5-volt standby (5VSB) power so that the standby functions on the computer and certain peripherals are powered. ATX power supplies are turned on and off by a signal from the motherboard. They also provide a signal to the motherboard to indicate when the DC voltages ...
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Most keyboard shortcuts require the user to press a single key or a sequence of keys one after the other. Other keyboard shortcuts require pressing and holding several keys simultaneously (indicated in the tables below by the + sign). Keyboard shortcuts may depend on the keyboard layout.
ATX12VO power supply connector Color Signal Pin Pin Signal Color Green PS_ON# 1 6 PWR_OK: Gray Black COM 2 7 +12 VSB Purple Black COM 3 8 +12 V1 DC Yellow Black COM 4 9 +12 V1 DC Yellow TBD Reserved 5 10 +12 V1 DC Voltage Sensing Pin Yellow
The most notable difference from modern 20/24-pin ATX power connectors is that the AT power supply connector did not have a signal to turn on the power supply, and also did not supply separate, "always-on" +5V standby power. The power supply was instead turned on and off via a mechanical switch that disconnected mains power. Modern, ATX ...
The power connector on the 3½-inch floppy drive, informally known as "the Berg connector", is 2.50 mm pitch (distance from center to center of pins). The power cable from the ATX power supply consists of 20 AWG wire to a 4-pin female connector. [ 1 ]