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Front panel headers
Hi group
I am new to this group, and new to working on computers. I am replacing my mobo(P4VM800) and processor, and I have a question relating to the colour coding of the front panel header connections. I believe that these are a standard. I have green & white power led 3 pin mobo has 2 pins ????????????? how do I get out of that? black & white switch 2 pin Can I assume that white is gnd? red & white hdd led 2 pin Can I assume that red is positive? purple & white reset switch 2 pin Can I assume that white is gnd? Thanks in advance to all those that take the time to give helpful advice. David |
#2
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Front panel headers
medico wrote:
Hi group I am new to this group, and new to working on computers. I am replacing my mobo(P4VM800) and processor, and I have a question relating to the colour coding of the front panel header connections. I believe that these are a standard. I have green & white power led 3 pin mobo has 2 pins ????????????? how do I get out of that? black & white switch 2 pin Can I assume that white is gnd? red & white hdd led 2 pin Can I assume that red is positive? purple & white reset switch 2 pin Can I assume that white is gnd? Thanks in advance to all those that take the time to give helpful advice. David If you scroll to the bottom of this page, it shows how to back the wire and crimp pin, out of its plastic housing. By repositioning the pin with the desired spacing, then you can plug it in. I use an Xacto knife (hobby knife) with a long pointed tip, to gently ease the tab out just enough, so the wire and crimp pin can be pulled out. Bending the tab too much, could ruin it. (If the plastic body can hang over the end, then you won't need to butcher it.) http://www.frontx.com/head_con.html The reset and power switch are not polarized, and neither do the wires contact ground. That allows the colors to be installed either way, and it will still work. It is up to the motherboard's PANEL header, to decide where the ground goes, not the switch end. The switch body and contacts should be floating. The LEDs are polarized, and can be installed the wrong way without harm. Just reverse them and try again. Garden variety LEDs have at least a 5 volt PIV (peak inverse volts) rating, which is why they can be reversed without damage. There are some exotic LEDs (the super-powerful ones for example), that do not tolerate reversal well, and those can have their life shortened. I think the more negative lead, is the "common color" lead - mine have one black wire on each cable pair, and the black would be the more negative. If each wire pair has a white wire, I'd assume that is the common color, and the more negative wire. The only advantage of getting it right the first time, is not having to shut down and try again. So it is pretty foolproof, as these things go. If you need spare parts, you can find some interesting things here. This page has plastic bodies, for making your own endings for the wires. The female crimp pins are near the bottom of the web page. You buy more of those than you need, as the black plastic bodies can be recycled, but the pins are for a single use only. http://www.frontx.com/order_c.html They also have some extension wires here. Depending on what you are doing, you might need some plastic bodies to go with these. Insulation is needed, so the wires don't short to one another. http://www.frontx.com/store/order_ad.html HTH, Paul |
#3
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Front panel headers
On Dec 12, 2:59 am, "medico" wrote:
I have green & white power led 3 pin mobo has 2 pins ????????????? how do I get out of that? If your PLED cable has 3 pins, note that the middle one is an empty/ dummy plug. It just makes it easier to plug in since you otherwise would have two 1-pin connectors (also found in some cases). black & white switch 2 pin Can I assume that white is gnd? red & white hdd led 2 pin Can I assume that red is positive? purple & white reset switch 2 pin Can I assume that white is gnd? White should always be ground/negative unless someone has messed it up. |
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