Compaq Desktop and M4-ATX

**kitt350** · 10-26-2008, 10:06 PM

What I have is a Compaq SR1023WM and from what I have looked up here is what it says about the motherboard
I have an older compaq desktop that I restored to factory settings and would like to put it in my car for a carpc. I have room in the back and plan on tearing it all apart so it is out of its case to save some room. If I have to go with the inverter route I will but like the looks of the M4-ATX and the specs and just wondering if anyone has any idea of this will hook up to my motherboard. Here are the specs that I can find out about the motherboard that is in it.
Motherboard Description MIS name: MS-6577 M-ATX Rev. 3.1 (Giovani), Rev. 4.0 (Giovani2)

Compaq name: Giovani-GL6, Giovani2-GL6
CPU Socket 478 for Intel P4 Williamette and Northwood processors
1.4GHZ to 2.8GHz or higher

Intel 845GV Chipset FSB 400/533
Multiplexed AGP interface
Integrated 3D/2D graphic core
Supports DDR 333/266/200 memory

Here is a link to more info about the computer
http://h10025.www1.hp.com/ewfrf/wc/d...product=411354

I just need to know if this PSU will work with this desktop or not? Any help from anyone is greatly appreciated. I have searched the site and couldn't really find the answer I was looking for. Just looking for help from some of the guru's on here that have delt with this before. Thanks again for any help anyone can give me if this will work. Don't really need people telling me that the inverter route will work since I know it will just would rather go with the M4 if possible. Thanks.

**DarquePervert** · 10-27-2008, 08:22 AM

Your link is bad. Looks like you copied/pasted a truncated link.

Compaq was notorious for not following industry standards for systems. That includes power supplies. You need to determine if your motherboard is truly ATX-compliant. If it is, then the M4 would work with that system.

Motherboard Description MIS name: MS-6577 M-ATX Rev. 3.1 (Giovani), Rev. 4.0 (Giovani2)

According to that, the motherboard is microATX. That may only indicate size and mounting, though. But it's certainly a good sign for you.

Here ya go.
A quick Google returned this: http://h20000.www2.hp.com/bizsupport...iesId=96300#A0
That's the spec sheet for this motherboard.
It has an ATX power connector, according to that.
There's a slim possibility that the board uses an ATX power connector, but isn't setup to the ATX spec. To be 100% safe, you may want to check the voltage on each line and compare it to the ATX specification. Even if it's not ATX spec, it's very likely you could make an adapter for it to use an M4ATX with this board.

**kitt350** · 10-27-2008, 10:19 AM

http://www.formfactors.org/developer...s%5Catx2_2.pdf

I found this on the net and on page 20 it shows values for the power connector. If this values are the same on mine as what is on there, would it be safe to say that the m4 will work with my motherboard. Please let me know so I know I am looking in the right direction.

**kitt350** · 10-27-2008, 10:45 AM

I just checked my motherboard and it has a 20 pin connector and not a 24 like the m4 has. Is there an adapter for this to work or not. Just looking for into. Working on testing the specs of the wires now to see if they will work.

**kitt350** · 10-27-2008, 11:05 AM

Okay here is what i get for values on the wires
1 Orange 3.3
2 Orange 3.3
3 Black Ground
4 Red 5
5 Black Ground
6 Red 5
7 Black Ground
8 Gray 5
9 Purple 5
10 Yellow 12
11 Orange 3.3
12 Blue -12
13 Black Ground
14 Green .17
15 Black Ground
16 Black Ground
17 Black Ground
18 None
19 Red 5
20 Red 5

Are these values correct to use the M4 and will this adapter work for a 24 pin to 20 pic http://www.highpowersupply.com/product-ac-2024.htm

Thanks for the help.

**DarquePervert** · 10-27-2008, 11:22 AM

24-pin is a newer ATX standard.
It should work for you. I'm certain you can get a "downgrade" connector to use a 254-pin ATX on a 20-pin motherboard.
On some motherboards, you can simply hand the additional 4 pins off the side of the 20-pin connector, as well.