What is JP2 on a board?

Hi Everyone:

      I have recently gotten a PCI/ISA Motherboard Diagnoistic Card.  The installation instructions are pretty straight forward.  In any case, I noticed the kit came with a small chord, about the size of an internal pc audio cable, which has has two female connectors on each end.  Additionally, I saw on the diagnoistic card, there are two male pins labeled JP2.  I figure one end of the chord connects to these two connectors on the diagnoistic card and the other two connect to two male pins on the pc's motherboard.  I did see two pins on the pc's motherboard, but, they were not labeled JP2.  The instructions within the user's manual simply states the following:  1.  Install the PC Analyzer Card in any available PCI or ISA expansion slot... 2. Power on the machine.  It never talks about this chord or the JP2 connector on the card.  Is it safe to assume this chord is not necessary in conducting a diagnoistic evaluation of a pc's motherboard?

        Any ideas on this post will be appreciated.

        Thank you

        George
GMartinAsked:
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burrcmConnect With a Mentor Commented:
Had a browse on your link. It is poorly explained, but it seems that it might be for external speaker connection.

Chris B
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Jaime OlivaresConnect With a Mentor Software ArchitectCommented:
JP2 means "jumper 2", jumpers have different purposes, but basically are used to configure a circuit with some option, so, must be mentioned somewhere in your manual.
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sciwriterConnect With a Mentor Commented:
A JP2 style jumper is generally for configuring a board's speed, reaction or logic, usually not for an external cable, but there are no hard and fast "rules".  A manufacturer could do anything they wanted with a JP1-2 style jumper pin and a cable.  If the diagnostic card is PCI, it can diagnose more than if it is ISA, as a general rule.  If it came with a 2 pin cable that resembles the power on cable for a PS/2 sytle power supply connector to the motherboard, it is very likely that this cable is designed to go to something like the power-on connector on the motherboard, not necessarily that, but something like it.

Without some specific instructions in the manual, seems like you are only guessing, but one would have to assume the card will function without the cable.  Have you tried it yet?
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burrcmConnect With a Mentor Commented:
Don't plug the cord into anything until you are certain of its purpose. Can you provide details of the card - make, model numbers, etc.

Chris B
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GMartinAuthor Commented:
Hi Everyone:

        I can not seem to find much useful information about the model of the card, but, here is the link I purchased the card...http://shopv2.elstonsystems.com/product_info.php/products_id/30

        Thanks

        George
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jarichConnect With a Mentor Commented:
I agree with Chris looks like an external speaker cable.
Kit Includes:
1 - PCI and ISA Test Card
1 - Printed Booklet w/POST Codes
1 - Additional LED
1 - External Speaker Cable
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GMartinAuthor Commented:
Hi Everyone:

        A representative from Elston Systems got back with me regarding the cable and the two pins labeled JP2 on the card.  In the old, old days, motherboards did not have an onboard speaker. So on the card is a connection to the onboard speaker to connect to one of those "old, old" motherboards to listen to beep codes if required.  Therefore, the cable is for an external speaker to connect via the JP2 connector on the card.  

        On a sidenote, I sincerely appreciate the extra elaboration upon the significance of the indexing of JP2.  Additionally, I appreciate some of the experts taking the time to explain the importance of jumper setting and what goes on behind the scenes when such actions are taken.  

          In closing, thanks so much everyone for sharing your insights.  I learned much from this one as always.

          George

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