# Can't find wire diagram for a Compaq Presario SR 5000 **URL:** \ **Category:** Factual Questions\ **Created:** [August 8, 2016, 8:13pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181 "2016-08-08T20:13:10Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![loninappleton](https://avatars.discourse-cdn.com/v4/letter/l/7feea3/32.png) [@loninappleton](https://boards.straightdope.com/u/loninappleton)\ **Post date:** [August 8, 2016, 8:13pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181/1 "2016-08-08T20:13:10Z")
Hello again, This is a hardware question on Compaq Presario SR 5000 computer case. There is one molded header which goes from the Case lights, power reset , HD etc and the switch setup is in a molded enclosure. In other words I simply can’t see nor find a manual with the colors that the wires represent. I am rebuilding a spare machine with a motherboard from my shelf. I have all the documentation on that. The molded 9 connector square plug has one pin locked and and so I cannot simply plug it in. What is needed from any source you can find is the info from the case end which is not so easily searched: Wire colors from: Case Power on/off Power on/off pilot light Reset Reset pilot light HD activity light. I really only need Power and Reset, but HD would be handy. Wire colors are 3 black for ground plus yellow, blue and red one each. There may be a service manual with a diagram of this but I cannot locate it. One found I will splice some wires to my old replacement mobo. Redirection to another site is ok, but not the usual ones. They have nothing at TomsHardware for instance. ---
**Author:** ![gnoitall](https://avatars.discourse-cdn.com/v4/letter/g/bb73d2/32.png) [@gnoitall](https://boards.straightdope.com/u/gnoitall)\ **Post date:** [August 8, 2016, 9:22pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181/2 "2016-08-08T21:22:40Z")
[This](http://support.hp.com/us-en/product/Compaq-Presario-SR5000-Desktop-PC-series/3328519/model/3376979/document/c00910113/) is HP’s information page on that motherboard. Apparently, it’s not an HP-manufactured board. It’s actually an HP badge-engineered EliteGroup ECS 945GTC-M. HP’s version is 945GCT- **H** M. It differs by having fewer SATA ports and back-panel I/O options, for instance. Probably a reduced cost version for Compaq’s specifications. The PDF manual for the non-Compaq version of the motherboard is [here](http://download.ecs.com.tw/dlfileecs/manual/mb/eng/p4/21_945GCT-M%20(1.0%20B)%20PDF_low.pdf). (PDF from Taiwan, but I think it’s safe.) Page 24 of the thing has the pinouts of the front panel connector. Just glancing at it, it looks completely dog standard. And I doubt HP would scramble a trivial connector in a badge-engineered/cost-reduction motherboard out of a perverse desire for obscurity and non-standardness. :dubious: So this pinout should do the trick. N.B.: Don’t confuse that with the (also 9-pin) front-panel audio header. That’s for the microphone and speaker jacks on the front panel, not for the LEDs and switches. ETA: you’re asking about the case. The case isn’t documented, but the motherboard is, so the connector in the case can be correlated to the motherboard. Q.E.D. ---
**Author:** ![Me\_Billy](https://avatars.discourse-cdn.com/v4/letter/m/e480ec/32.png) [@Me\_Billy](https://boards.straightdope.com/u/Me_Billy)\ **Post date:** [August 8, 2016, 9:34pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181/3 "2016-08-08T21:34:31Z")
Rather than “wiring diagram”, try searching for schematic or service manual. ---
**Author:** ![loninappleton](https://avatars.discourse-cdn.com/v4/letter/l/7feea3/32.png) [@loninappleton](https://boards.straightdope.com/u/loninappleton)\ **Post date:** [August 8, 2016, 10:19pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181/4 "2016-08-08T22:19:35Z")
> [@Me\_Billy](#): > > Rather than “wiring diagram”, try searching for schematic or service manual. This sounds like a better route. I got the switches going but I’ll have to abandon the project. All the mechanicals work but the cpu swap-- even though it fits in the AM2 Sempron board will not load the POST or the Win7. Thanks for the help. I’ll still look up the schematic if I can for a future build in this old case. ---
**Author:** ![loninappleton](https://avatars.discourse-cdn.com/v4/letter/l/7feea3/32.png) [@loninappleton](https://boards.straightdope.com/u/loninappleton)\ **Post date:** [August 8, 2016, 10:41pm UTC](https://boards.straightdope.com/t/cant-find-wire-diagram-for-a-compaq-presario-sr-5000/762181/5 "2016-08-08T22:41:31Z")
Just one more ask for the experts. The cpu may be incompatible. But I also used a power supply 24 pin main cable to a 20 pin board with the extra snap in four pin piece off. What would that do if anything?