ATX (Advanced Technology eXtended) is a motherboard configuration specification developed SFX; TFX; WTX; AMD GES; 5 EPS12V ATX also made the PS/2-style mini-DIN keyboard and mouse connectors Power Supply Design Guide, v · EPS12V Power Supply Design Guide v Insignia W ATX12V /EPS12V Power Supply: Designed to power select computers; W continuous power; ATX12V /EPS12V Specifications. We’ll answer PSU spec questions of modular vs. non-modular PSUs, EPS12V vv The EPS (Entry-level Power Supply) standard is.

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Both may and often do contain current limiting controllers. Rarely, a linear regulator generated these 3. Other minor changes were introduced.

ATX – Wikipedia

Retrieved 18 November So the capacity inflation factor’s hit 2. Retrieved July 12, Power supply unit computer. Modern personal computers universally use switched-mode power supplies. For example, genuine Dell power source uses 1-Wire protocol to send data by third wire to the laptop.

Power supply unit (computer) – Wikipedia

The 20—pin Molex Mini-Fit Jr. It was the first major change in desktop computer enclosuremotherboard and power supply design in many years, improving standardization and interchangeability of parts.

Computer power supplies may have short circuit protection, overpower overload protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection. The latest specification is v2.


The system power consumption is a sum of the power ratings for all of the components of the computer system that draw on the power supply. Designed for dual CPUs, and quad double slot video cards.

In order to supply large amounts of low-voltage power to the Pentium and subsequent microprocessors, a special power supply, the voltage regulator module began to be included on motherboards. ATX is the most common motherboard design. This voltage was required by the ISA bus, which is sprc longer present on almost all modern computers.

This article is about the computer form factor. This low-voltage control allows other hardware or software to turn the system on and off. Although these boards have room for additional expansion slots 9 and 8 total, respectivelyall three provide only seven expansion connectors; the topmost positions are left vacant to provide more room for the CPU, chipset and associated cooling.

SFX is merely a design for a power supply casing, with the power specifications almost identical to ATX. Screw holes not completely compatible with some ATX cases. The gains of using an efficient power supply are more substantial in computers that use a lot of power.

It is specified in Revision 1. Archived from the original PDF on October 21, For some power supplies the repeated restarting is audible as a quiet rapid chirping or ticking emitted from the device.

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Power supply unit (computer)

The general configuration is a double-pole latching mains voltage switch with the four pins connected to wires from a four-core cable. Any other onboard interfaces such as serial and parallel ports had to be connected via flying leads to connectors which were mounted either on spaces provided by the case or brackets placed in unused expansion slot positions. As of ATX 2.

An additional wire referred to as wpec Good’ is used to prevent digital circuitry operation during the initial milliseconds of power supply turn-on, where output voltages and currents are rising but not yet sufficient ep1s2v stable for proper device operation.

They also provide a signal to the motherboard to indicate when the DC voltages are in spec, so that the computer is able to safely power up and boot.

This is a minor revision from March Archived from the original PDF on October 21, Originally, the motherboard was powered by one pin connector.