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Questions tagged [atx]

The ATX (acronym for Advanced Technology Extended) is a standard created in 1995 by Intel, addressing four major areas of improvements: greater ease of use, better support for current and future input and output devices, better support for current and future processor technologies and reduction of system cost.

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How to connect mini-itx with atx 2-pin block to 24-pin ATX12V

I have a mini-itx motherboard that has a 2-pin internal 12V DC-in power connector (Motherboard manual) (+12V DC) I also have a power supply with 24-pin motherboard connector. Now I want to connect ...
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1answer
101 views

Is my PSU ATX 4-pin connector reversed from the standard?

I just got an EVGA 750 GQ power supply. The manual mentions that it includes a ATX 20+4 pin motherboard cable. However, the 4-pin connector appears to reverse the pinouts from the 4-pin plug on the ...
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255 views

Can I plug 2 x 12V P4 connectors to EATX12V?

I'm assembling a PC with ASUS PRIME X370-A motherboard and Be quiet! System Power 9 500W power supply. In terms of power, the motherboard needs 1 x 24-pin EATXPWR and 1 x 8-pin EATX12V: The problem ...
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1answer
55 views

Computer Freezing Every Boot

My computer is freezing each time i turn it on. It doesn't freeze at the same time on boot. I was hoping for suggestions. Thing's I've Tried: Remove all RAM but one chip Unplug all external ...
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2answers
10k views

Dimensions of Standoffs and Screws for ATX Motherboard

What are the dimensions for the standoffs and screws used for mounting an ATX motherboard to the computer casing? I'm using them to make my own motherboard mounting plate. Some sources say the ...
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1answer
68 views

Can a molex power splitter safely supply power to an IDE HDD and 3 fans?

This is for a legacy PC I want to keep for a work. The PSU has only 1 4pin molex which is connected to the IDE HDD atm. I live in a tropical area and things get really hot and my PC overheats ...
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1answer
58 views

How can 5 small case fans in parallel cause instability for a hefty ATX 900w PSU

I hope this is not off topic here, but I have a PC with a 900w ATX PSU (Be Quiet! Dark Power Pro 8 900W). I have it set up in my PC with motherboard, GPU and case fans connected to it. I`m now ...
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1answer
89 views

What are this connectors on Power Supply?

Pictures Connectors PSU Details
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0answers
89 views

ATX PC reboot, does power supply actually cut off power to components?

When I issue the reboot command in OS, does it actually affect power supply output (12V rail in particular)? For instance, PC B uses PC A's power supply for hard drive (SATA power) and graphics card (...
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1answer
97 views

What is the power supply connector used for?

I recently came across an old ATX power supply, and one of its connectors looks like this (apologies for the quality): Does anybody know what this connector is called and what it connects to/is used ...
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2answers
3k views

Low Profile PCIe card in a standard ATX case - will it fit, and do I need adapters?

I've got a standard normal-sized ATX case (don't know its name or specifications, because I got it from a friend) and a standard motherboard (MSI B150 PC-Mate) inside. Since it doesn't come with a ...
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0answers
883 views

How can I repair a power supply for a Apple's Power Mac G4?

This is an attempt to gather a reference page for anyone trying to replace a failing PSU from a Power Mac G4 with an equivalent ATX in the future. There are still a couple of pages -luckily- ...
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1answer
550 views

Connecting an ATX power supply to a Hard Drive Enclosure

I have a 4 bay hard drive enclosure made by Sans Digital (one of the TR4M series)... check that, I have 3 such enclosures and the power supply died on 2 of them. I called Sans Digital and asked about ...
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3answers
601 views

Can't jump-start ATX PSU

I've bought a new ATX PSU on the internet. I was planning to use it as a lab power supply and as soon as it arrived home I've tested it by shorting the green wire with a black wire. It worked for less ...
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1answer
1k views

3.3V and 5V rail in modern PC

These days in ATX PSU these voltages come from a single rail and have fixed amount of current. Seems like they do not affect the PC functionality these days. I know that USB port use the 5V rail ...
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1answer
700 views

PC will only turn on if I position the PSU ATX power cable in a certain way

The past 3 days I've been trying to fix this issue. I just bought a new motherboard and CPU, but I've ran into a problem. My computer will not turn on unless I'm pulling/pushing/positioning the PSU ...
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2answers
738 views

How does the motherboard PW switch operate, exactly?

I have a special miniature ATX power supply, and it has the PW output pins that are supposed to be connected to the motherboard so that the PSU can turn the system on or off. But I have a different ...
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0answers
638 views

Computer doesn't start when 12V CPU power plugged in

Configuration (troubleshooting): Board: Socket AM3+ Gigabyte GA-78LMT-S2PT CPU: AMD FX4300 PSU: 500W Peak Other components: GPU: ASUS Nvidia GTX960 Mem: 12GB (8+4) 1333 HDD: Seagate 1TB SATA ...
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1answer
12k views

ATX Dell PSU to Offical ATX 2.0 spec pinout

Hey all I am using an old Dell Precision R5400 which has the 750w hot swap-able power supply. Problem being, since its a dell, the ATX pin layout is different than that of a normal, standard ATX 2.0 ...
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1answer
494 views

What kind of standoffs work with this case?

I have a Chenbro PC61166 Xpider case which I got second hand. The standouts for ATX mounting are missing, but where there would normally be screw holes for me to install common brass standoffs, ...
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2answers
6k views

Why is -12V needed on an ATX power supply

Checking the standard ATX connector pinout it mainly gives out "standard" positive voltages, like +3.3VDC, +5VDC and +12VDC. There is one exception, pin 14, which actually gives out -12VDC: Based on ...
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1answer
1k views

Can the Power button be configured as a combo?

In Mac, combinations of the power button (Shift + Power or double press it to restart) are possible, as if it's just a normal button on the keyboard. It can also be configured in Windows 8.1 and Linux ...
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48 views

How to make that computer turn on by external power on?

I have remotely controlled power supply, and I wish to implement cold reboot with it, for cases of unrecoverable hangs. Unfortunately, once power is off, computer is not turning on when power appears ...
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2answers
1k views

Part Number for Motherboard ATX 24 Pin Male Header

The 24 pin ATX connector (male, housing) on my motherboard has been melted to the 24 pin connector from the PSU. I will be replacing the motherboard's 24 pin ATX connector myself, but am not able to ...
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249 views

ATX PSU: Pin 9 reads a lower voltage when plugged into motherboard

I'm pretty confident that the PSU is bad in this computer, but I want to understand what my multimeter is telling me. With the PSU plugged into the wall only, the multimeter says that pin 9 is a ...
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2answers
3k views

Can a motherboard work when only supplied with ATX12V?

I am thinking of making a silent NAS for 3-4 people. Today I bought: 4TB Western Digital HDD 2x4GB DDR3 204 pin RAM Supermicro X10SBA motherboard which has 24 pin and 4 pin power connector. Does 24 ...
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1answer
1k views

Is DELL's HP-P2507FWP PSU's 20-pin connector wiring non-standard?

My old PC's ATX PSU died and I got a replacement in the form of a DELL 250W Power Supply model# HP-P2507FWP. It has the exact set of connectors (except for an additional, unused, 6-pin connector), ...
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3answers
12k views

Turning on ATX power supply with no load

There are some rumurs around the web that ATX power supplies should not be turned on with no load. I have a partially unstable PSU that I want to turn it on out of PC case and check the voltages with ...
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1answer
369 views

6-pins ATX power for PCI slots 2, 3, 4, & 5

I have EVGA’s Z77 FTW motherboard as described here: http://www.evga.com/support/manuals/files/visual/151-IB-E699_Visual_Guide.pdf There are two inputs for 6-pins ATX power for PCI slots 2, 3, 4, and ...
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0answers
874 views

Form factor of ATX expansion slots

I am building my own computer case, but I am having difficulty finding the form factor specifications for the ATX expansion slots - in particular the maximum height of the slot and the spacing of the ...
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2answers
48k views

ATX power: 20 or 24 pins?

What is the difference between 20-pins ATX power cables and 24-pins ATX power cables for motherboard? I see that Cooler Master Silent Pro PSU has an extensible plug, showing 20 pins + 4 pluggable pins....
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1answer
269 views

Is it possible to have an ATX and a mini ITX boards running under one (ATX) PSU?

Specifically - are there any ATX PSU's with double 24 pins, or some kind of adapters that would make it possible?
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2answers
97k views

Can I safely use a PSU with an ATX 12v 4-pin for a board that has a EPS 12v 8-pin?

There's many similar questions to this, and because the answers vary depending on the setup, I want to ask for my friend's specific setup. He recently upgraded to a Core i5 gaming build, so he has ...
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2answers
215 views

The swan song of an ATX PSU

My PC was unplugged for 3 weeks. Came back, plugged it into outlet and turned it on, then came a mighty BANG and smoke. The PSU is (was) a 5.5 years old Antec TRUEPOWER II TPII-380 380W. Would this ...
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5answers
3k views

How much power the system is REALLY consuming?

I suspect that my ATX case's power unit from China provides FAR LESS power than it's supposed to. Is there a way to see (in real time) how much power the whole system is trying to consume and how much ...
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2answers
894 views

Selecting a quiet ATX PSU

I currently have a Corsair CX430 V2 PSU in my desktop: However, it's extremely loud, especially when I do any resource intensive work (running a VirtualBox instance, playing a game, or just on a hot ...
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2answers
1k views

ATX 12V too low?

Im noob at pc's but is 3.20V too low for ATX +12V? CPUID Hardware Monitor readings: CPU VCORE - Value: 1.49V; Min: 1.46V; Max: 1.51; ATX +3.3V - Value: 3.19V; Min: 3.18V; Max: 3.19V; ATX +5V - Value: ...
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548 views

Diagnosing PSU/Motherboard issues with Shuttle's proprietary ATX connector

I have a Shuttle SN25P that won't power on at all - fans, no lights. The cable and power have been checked and the PSU switch is in the on position. I need to figure out if the motherboard or PSU are ...
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2answers
15k views

Can I use an ATX power supply to power an mini-ITX board?

My wife's computer has given up. I think the motherboard blew up. I'm thinking of replacing it with a cheap mini-ITX board with an Intel Atom processor on it, since all she needs the computer for is ...
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1answer
2k views

ATX Motherboard power connectors causing power-on failure?

So my problem is that my motherboard has enough space for the 24 pin motherboard power connector. However when I have plugged in all the 24 pins, my computer has failed to start. So then I reopened my ...
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1answer
610 views

Will all 4 cores work if the PSU has 4-pin supply instead of EPS12V?

Motherboard: P7P55D-E PRO Processor : i5-760 PSU : Gigabyte Superb 460 The PSU provides a 4-pin CPU connector; whereas the m/b has an 8-pin socket (2 sockets are covered/protected by a ...
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2answers
3k views

4-pin CPU power supply connector inversion?

I am currently trying to boot an Intel D915GAG motherboard fed by a Corsair HX450W. This PSU has two 4-pin processor power supply connectors available. I tried booting with either one of these plugged ...
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3answers
10k views

Computer won't turn on, how to diagnose why?

My computer, ASUS MB, ThermalTake PSU, won't turn on after shutting down last night. Short of taking out the power supply and putting in a new one, are there any tricks to figuring out/fixing the ...
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2answers
3k views

Who makes quiet ATX horizontal cases?

Who makes quiet ATX horizontal cases? I am building a new PC, but even the smallest mid-towers have room for 3 5.25" drives and even more 3.5" drives. I am thinking a horizontal case just big ...
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2answers
1k views

Motherboard and power supply compatibility

I just bought a Gigabyte GA-P55A-UD3 mother board and an Antec BP550 Plus power supply. When I was connecting the ATX 12V connector from the power supply (which is two 2x2 connectors) I noticed that ...
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1answer
4k views

Can I plug a 8-pin EPS connector from the PSU to a 4-pin ATX motherboard?

The PSU for my motherboard just died and I was able to get a used one from a friend. Trouble is, this PSU I got from him doesn't have the 4-pin ATX power cord that powers the CPU. It only has an EPS 8-...
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1answer
1k views

Can a +5VSB supply rail value of 5.4V prevent a PC from starting

In the last few days my PC has refused to start. It's initial behaviour was to repeatedly try to power on until I hit the power switch on the power supply. It now exhibits one of two behaviours: It ...
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2answers
588 views

Can I restart a PC remotely if it is unreachable (down)?

We have a warewulf cluster of about 20 nodes being standard PC boxes (I believe ATX, 4-year old) w/o hard drives - they boot from master machine via LAN. Some of the nodes tend to crash and we ...
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1answer
64 views

What form-factors do PSUs use nowadays?

I'm building a desktop and I'm going to get the SilverStone SST-ST50F 500W as my PSU. What form-factor is it? Is it ATX, following the motherboard form-factor or different?
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2answers
94 views

Why Have The System Builder Market Not Migrated to the BTX Form Factor from ATX yet?

I'm starting to build my first computer from the parts that I have purchased and a question that had been nagging me for the past few weeks was why the ATX form factor is still currently used when ...