CiT M-300U 300W Micro Atx Power Supply

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Under this standard, power supplies provide only a 12V output. ATX12VO introduces a new 10-pin connector to supply the motherboard, replacing the 24-pin ATX12V connector. This greatly simplifies power supplies, but moves DC-to-DC conversion and some connectors to the motherboard instead. Notably, SATA power connectors, which include 3.3V and 5V pins, need to move to the motherboard instead of being connected directly to the power supply. [34] Some manufacturers and retailers incorrectly market SFX power supplies as μATX or MicroATX power supplies. [38] ATX ( Advanced Technology Extended) is a motherboard and power supply configuration specification, patented by David Dent in 1995 at Intel, [1] to improve on previous de facto standards like the AT design. It was the first major change in desktop computer enclosure, motherboard and power supply design in many years, improving standardization and interchangeability of parts. The specification defines the dimensions; the mounting points; the I/O panel; and the power and connector interfaces among a computer case, a motherboard, and a power supply.

One minor note is that footprint refers to how much space a device consumes on your desk or floor, so that a 16-by-16-by-6-inch desktop has a larger footprint (256 square inches) than a 9-by-21-by 24-inch-tall full tower (189 square inches). Height is used for volume, but not footprint. What About Small Form Factor?

Because of the DC-DC converters on the motherboard that convert 12V to the low voltages required by the Intel Pentium 4 and AMD AthlonXP (and subsequent) processors, such systems draw most of their power from the 12V rail. The AP201 has a 33-liter footprint, which isn’t all that large, but it does a lot with the space. With support for full-size ATX power supplies up to 180mm long, graphics cards up to 338mm long, and both 280mm and 360mm radiators, the interior is roomier than it seems at first. This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. ( May 2020) ( Learn how and when to remove this template message) For more on this subject, see our A Basic Guide To Motherboard, Case, and Power Supply Form Factors feature.

This article is about the computer form factor. For other uses, see ATX (disambiguation). An ATX motherboard Comparison of some common motherboard form factors (pen for scale) sense should be connected to the +3.3V on the motherboard or its power connector. This connection allows remote sensing of the voltage drop in the power-supply wiring. Some manufacturers also provided a +5V sense wire (typically colored pink) connected to one of the red +5V wires on some models of power supply; however, the inclusion of such wire was a non-standard practice and was never part of any official ATX standard. PS_ON# ( power on) is a signal from the motherboard to the power supply. When the line is connected to ground (by the motherboard), the power supply turns on. It is internally pulled up to +5V inside the power supply. [3] [14] Modular PSU cables are not universal; this applies in two ways. The first is that not all components use the same pin layout, for example you can’t use a MOLEX cable to power a motherboard. b. ATX12V-GES 8-pin P2 motherboard connector. This pinout on the motherboard connector is as follows when viewing the motherboard from above:

Hardware Knowledgebase - do I absolutely HAVE to plug in the ATX12V 4pin connector on P4 motherboards? - HardwareFAQs: Powered by neofaq". www.neoseeker.com. Archived from the original on October 3, 2009. SFX Form Factor". Pcguide.com. Archived from the original on 11 February 2001 . Retrieved 18 November 2014. The power allocation between 3.3V, 5V and 12V rails is very different between older and newer ATX PSU designs, as well as between older and newer PC system designs.

Clearance is an important consideration in any PC build, and it isn’t any less so here. Larger cases have more clearance for fans, liquid cooling, and other components. You’ll also need to keep in mind the graphics card you plan to use, as these can get rather long, and not every graphics card will fit every case. a b "AT / ATX12V Power Supply Design Guide Version 1.1" (PDF). Intel Corporation. August 2000. p.28. Archived (PDF) from the original on 2010-12-07 . Retrieved 2011-03-11.Some manufacturers make SFX-L dimensions of 125× 63.5× 130mm to accommodate a 120mm fan. [39] TFX [ edit ] A TFX power supply unit a b c d e "ATX Specification - Version 2.2" (PDF). Archived from the original (PDF) on 2012-07-25 . Retrieved April 4, 2014. Generally, supply voltages must be within ±5% of their nominal values at all times. The little-used negative supply voltages, however, have a ±10% tolerance. There is a specification for ripple in a 10Hz–20MHz bandwidth: [3] Supply (V) The SAMA IM01’s angular design and aesthetics will be familiar to anyone that’s seen an NR200. But the IM01 differs in a few ways that make it an excellent choice for anyone seeking a compact mATX case. The power distribution specification defined that most of the PSU's power should be provided on 5V and 3.3V rails, because most of the electronic components (CPU, RAM, chipset, PCI, AGP and ISA cards) used 5V or 3.3V for power supply. The 12V rail was only used by computer fans and motors of peripheral devices (HDD, FDD, CD-ROM, etc.)

For instance, ATX 2.03 is quite commonly seen on PSUs from 2000 and 2001 and often includes the P4 12V connector, even if the norm itself did not define it yet. [3] ATX12V 1.0 [ edit ] The six-pin AUX connector from ATX12V 1.x was removed because the extra 3.3V and 5V circuits which it provided are now incorporated in the 24-pin ATX motherboard connector. There are plenty of Power Supply Units available on the market. Some have a special size or unique connectors which make them difficult to find. To help you locate the one you need see bellow the measurements of the most common PSU available. Can't find what you need? Tell us your PSU or PC model numbers, send us pictures, chat online or call us. Also have a look at our PSU Compatibility List here. There’s no way around it: Sliger’s Cerberus is an expensive case. However, its combination of SFF dimensions, component compatibility (including room for multi-GPU setups!), and exhaustive internal mounting options makes it a unique offering as far as compact mATX cases go.

Effective March 2007. Recommended efficiency was increased to 80% (with at least 70% required) and the 12V minimum load requirement was lowered. Higher efficiency generally results in less power consumption (and less waste heat) and the 80% recommendation brings supplies in line with new Energy Star 4.0 mandates. [26] The reduced load requirement allows compatibility with processors that draw very little power during startup. [27] The absolute over-current limit of 240VA per rail was removed, allowing 12V lines to provide more than 20A per rail. [ citation needed] ATX12V v2.31 [ edit ] PWR_OK ( " power good") is an output from the power supply that indicates that its output has stabilized and is ready for use. It remains low for a brief time (100–500 ms) after the PS_ON# signal is pulled low. [15] Efficiency in power supplies means the extent to which power is not wasted in converting electricity from a household supply to regulated DC. Computer power supplies vary from around 70% to over 90% efficiency.