UPDATE Oct 22, 2001 noon, Mountain Daylight time.†
I am retired.† There are no more adapters.† My crimper is worn out and I am not going to replace it.†
E-mail dougm (at) csolutions (dot) net
Die spammers, DIE!!!!!!!
How to Use Your Dell Case with a Real Motherboard
This information is not valid for Dell's Pentium 4 systems.
Rewiring your machine can be dangerous to your or your machine's health. You do so at your own risk.
This is a lot of hassle.† May I suggest you just buy a new case.†
EMS computing has really good prices on cases and has a pretty good rating at Resellerratings.com
(If you just want to put your Dell in a new case, or upgrade the power supply, click here.)
Your Dell computer uses a proprietary power supply and the connections to the two buttons and LEDs on the front of the case need to be adapted.†
UPDATE:† Apparently, there is no standard for the front panel connections.† I should say that your Dell is less standard than 99.9% of the rest of the world with regard to the front panel connections.† The Power supply, however, is proprietary.†
This page attempts to give you several ideas for how to adapt your case.† The easiest (cheap) way is to buy an ATX and AT power extension and cut and splice the 25 wires.† Then either buy or make an adapter for the front panel buttons and LEDs.† The adaptations should cost about $25 with shipping.† By far the easiest way is to buy a new case.† Dell power supplies are excellent quality.† You will need to spend upwards of $80 or so to get a case with an equivalent power supply.
I have an unconfirmed report that the SIS 620 motherboard (whatever that is) has the same front panel connections as Dell uses.† I also seem to remember Tyan makes some boards with the same connections.† I also know that the ECS K7S5A has the same configuration, but there is not enough room between it and the fan header to fit the Dell connector.† You would have to cut off some of one end of your Dell connector, but I think it would work.† You would then need an AMD-approved power supply.†
This information is from a Dell Dimension XPS P166s, ca 1996.† It was the very first Pentium available from Dell using SDRAM.† I think all other Dells are the same.† Dell changed a lot of things with their P4 systems.† This site will not help you with Dell P4 cases.†††
If you want to use your Dell case with a real motherboard, youíll need to do some re-wiring of the front panel connectors.† Youíll also need to replace your power supply (since Dell uses a proprietary power connector), and youíll need to make openings in the back of the case for 2 com ports and 2 USB ports if your Dell doesnít have them.† My Dell only had 1 com port and no USB ports.† I used a Dremel tool with a cutting wheel and made really nice square holes.† The panel comes out of the case so you can work on it.† HEREís a picture of an I/O panel I just cut on.†
I bought an Antec PP303x 300w power supply for $37 from www.buy.com and installed it in the Dell
case.† I chose that particular supply
because of an excellent review on www.anandtech.com
.† Itís a good power supply at a great
but it is very noisy.†
(The power supply is very quiet.†
My noisy fan is a Golden Orb CPU cooler that has a bad bearing.)† UPDATE, DEC 10, 2001:† The Antec PP303x is a fine power supply, but
will not run the latest AMD processors.†
For that, you need to go to AMDís Web site, to their technical info
page, and buy an ATX power supply that is listed there.† Enermax makes good power supplies, as does
Enhance, both available at http://www.newegg.com.† I guess you could re-wire the power
connector on the Dell supply if you wanted.†
Also, just in case youíre wondering, the current motherboard form factor
standard is ATX.† My Dell case was a
standard ATX case, and you need to be sure you buy an ATX motherboard and power
is the address for the Dell Power supply pinout from a Dimension XPS B
series computer if you care to re-wire the power supply outputs.† You are concerned with P1 and P7.† You should be able to find the ATX standard
on the Web here.† Should that link go dead, hereís the
diagram some clarification as to how the diagram is oriented.†
So now you have a real power supply in your Dell case and you need to hook up the front panel buttons to your new motherboard.† I first tried to split apart the ribbon cable at the motherboard end and use it that way, but I couldnít get the wires split neatly enough to suit me.
Here is my wiring job.† I removed the retainer from the top of the connector, pulled out the ribbon cable, punched in those wires you see, and put the retainer back over the wires.† If you remove the little board from the plastic mounts, you can turn it over and follow the tracings on the board to the LEDs and the switches.† I used an old case as a donor for the wires.† About the only other thing I can think of for you to use as wires with ends on them are the CD-ROM to sound card cables.† †
The magnet donut was on the wires, so I left it.† I also had to install the speaker, since my Dell motherboard had a speaker onboard.† Öbut the speaker fit in a slot in the existing Dell plastic thingy.
Here is a close up of the connector with the retainer removed.† The wiring is from the top:
Orange††† IDE LED +
Brown†††† pwr LED +
White††††† IDE LED Ė
Black††††† pwr LED Ė
Gray†††††† reset switch
Red††††††† pwr switch
Gray†††††† reset switch
Black††††† pwr switch
Now you might want to test your new wiring before you plug it into your new motherboard and fire it up.† Hopefully you wonít let the magic smoke out of your motherboard.† Hereís a suggestion for testing.
Apparently my descriptions arenít clear enough, so Iíve taken some new pictures to clarify what Iím talking about.† I went to both Radio Shacks in town, and neither one stocks the stuff I need.† I donít want to head to town to the big electronics shop, so hereís some clarification as best as I can do without having the parts to take pictures of.†
I donít make the adapters for the power supply.† The good news is you can make your own for about $10.00.
I received an E-mail from a very helpful Dell upgrader regarding the power connections.† At http://www.cablesonline.net/powercables.html there is an ATX power extender for the lovely price of $3.00, and an AT power extension for $3.00.† There is no picture, but this is just what Iíve been looking for.† I might order one some day and post a pictorial ďhow toĒ on making one of these work for your Dell power supply.† In the meantime, these couple of pictures will have to do.† It can be done without any special tools at all, and Iíll let each interested Dell upgrader make his/her own, since Iíd rather not do it and wouldnít like the liability of messing with a power supply.† That was also my intention with the front panel connectors, but there didnít seem to be a good way to do it, so I decided to make some.
Hereís a photo of the power supply upgrade sent to me by a resourceful Dell owner (thanks, Jim).† He bought the ATX power extender and the AT extender.† You just need the one connection and the wires from the AT connector to plug in the extra little Dell (3.3v) connection.† Looking at the photo below, the right side plugs into the Dell power supply and the left side plugs into your new motherboard.† You basically cut all the wires in half on the ATX extension and then use half the AT extension and splice everything back together the right way.† Fun huh?† You could use the same power extenders and adapt a Dell motherboard to a standard ATX power supply.† Youíd just use the other end of the AT connector and reverse the ATX plugs.†
Hereís his drawing of the splice job.† Notice that space 19 is not used on the Dell connector, but is used on the ATX connector.† This means you canít simply cut and splice your Dell power plug, since youíd be short pin 19.† You will have to use the ATX extender to do this modification or buy a terminal and a crimping tool to get wire 19 into the Dell connector.† The small words you canít read say ďDellĒ, ďATXĒ, and ďAuxĒ (thatís the little 3.3v connector on the Dell). You can see that circuits 1 and 3 get spliced together on the Dell end, and then those two wires get spliced into circuit 4 on the standard ATX plug.† If you look at the diagrams HERE , you can see that those are the +5v wires.† I think you should be able to figure out the rest. You can go HERE to see my diagrams and some photos of the Dell and standard ATX connector.†
Once again, I do not make these power supply adapters.† You make your own or buy a new power supply.
I have looked at the support.dell.com site for the XPS M___s computer.† They seem to have a different arrangement for the pins, with a separate hard drive LED connection.† If you have one of these, E-mail me and we can decide how to adapt your case.† Update: The M___s motherboards are the same.† The extra HD LED pins seem to be for SCSI drives.
Be sure to read this whole page, as there is an idea for you to make your own for under $5.00.† It wonít have the nifty connection for the Dell ribbon, but itíll have the small connections to the left.†
I used to make these with solid wire, because thatís what I have and itís much easier to work with.† That means you need to install them and leave them.† With enough back and forth movement of the wire, the wire could break.† They should be fine for many years of service, though.† If you get a broken wire, E-mail me and Iíll send you a new wire to stick in your harness.† The last several cases Iíve bought have come with solid wire for the front panel connections.†
Here is a shot of one of my adapters.† The plug at the right plugs into the Dell ribbon conection.
The smaller plugs on the left plug into your new, standard, ATX motherboard.†
NO SOLDERING REQUIRED!
If youíre going for the soldering iron, youíre doing something wrong.† One of my customers got out the soldering iron and ended up buying a new case.
Here is a list of machines folks have installed these adapters on.