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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 ...
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 ...
ATX motherboard power connector (usually called P1): This is the connector that goes to the motherboard to provide it with power. The connector has 20 or 24 pins. One of the pins belongs to the PS-ON wire (it is usually green). This connector is the largest of all the connectors. In older AT power supplies, this connector was split in two: P8 ...
The ATX specification requires that the power-good signal ("PWR_OK") go high no sooner than 100 ms after the power rails have stabilized, and remain high for 16 ms after loss of AC power, and fall (to less than 0.4 V) at least 1 ms before the power rails fall out of specification (to 95% of their nominal value).
The power connector was typically the same 4-pin female Molex connector used in many other internal computer devices. The communication connectors on the drives were usually a 50 (for 8-bit SCSI) or 68 pin male (for 16-bit SCSI) "IDC header" which has two rows of pins, 0.1 inches (2.54 mm) apart
AMP Mate-n-Lok and Molex 8981 0.093-inch pin and socket power connectors Molex standard 0.093-inch pin and socket connectors Molex disk drive power connection system tool and connectors Molex Mini-Fit Jr. connector as used for ATX power supply. A Molex connector is a
Mini-ITX 2.0 SoC mainboard with ATX12V connector installed in a Micro-ATX computer case. The Mini-ITX standard does not define a standard for the computer power supply, though it suggests possible options. Conventionally Mini-ITX boards use a 20- or 24-pin "original ATX" power connector.
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 ]