New computer front panel question.
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Posted by Ajax on November 22, 2007, 1:35 am
Please log in for more thread options computer. I am using a Gigabyte GA-P32-DS4 motherboard. There are two wires in the Centurion 5 with separate connectors that are not labeled. They are white and green and they are twisted together. It was my guess that they were either supposed to be connected to the "Message/Power/Sleep Led" as listed on page 30 of the GA-P35-DS4 manual or that they were supposed to be connected to the "Power_LED" three prong connector on motherboard. The manual does not identify any of the front panel connectors though all but these two wires are labeled on their respective connectors. Also, the Gigabyte manual states that the connectors should be installed respecting the pins positive and negative assignments. All of the Centurion front panel connectors have a white and a colored wire. Is the white wire negative? The Gigabyte manual, other than noting on page 23 that there is a "PWR_LED" header, never describes actually connecting it to anything. Any thoughts? TIA | |||||||||||||
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Posted by kony on November 22, 2007, 2:20 am
Please log in for more thread options It would help if you linked the manual. What connectors and functions do you presently have accounted for? It would seem at least (if you're like most builders) you want power led, HDD led, power button, and reset button if the case is equipped with reset button. Which of these do you not have connected yet? If it is the power LED, then yes you should connect these wires to the pin positions for that as shown in the manual. Since the power LED can be reverse connected w/o harm, try it one way and if it does not light up, reverse the plug positions. | |||||||||||||
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Posted by Ajax on November 22, 2007, 3:10 am
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>wrote:
> >> I purchased a CoolMaster Centurion 5 case from New Egg to build a new
>>computer. I am using a Gigabyte GA-P32-DS4 motherboard. >> >> There are two wires in the Centurion 5 with separate connectors that >>are not labeled. They are white and green and they are twisted >>together. It was my guess that they were either supposed to be >>connected to the "Message/Power/Sleep Led" as listed on page 30 of the >>GA-P35-DS4 manual or that they were supposed to be connected to the >>"Power_LED" three prong connector on motherboard. >> >> The manual does not identify any of the front panel connectors though >>all but these two wires are labeled on their respective connectors. >> >> Also, the Gigabyte manual states that the connectors should be >>installed respecting the pins positive and negative assignments. All >>of the Centurion front panel connectors have a white and a colored >>wire. Is the white wire negative? >> >> The Gigabyte manual, other than noting on page 23 that there is a >>"PWR_LED" header, never describes actually connecting it to anything. >> >> Any thoughts? >> >> TIA >
>It would help if you linked the manual. > >What connectors and functions do you presently have >accounted for? It would seem at least (if you're like most >builders) you want power led, HDD led, power button, and >reset button if the case is equipped with reset button. > >Which of these do you not have connected yet? If it is the >power LED, then yes you should connect these wires to the >pin positions for that as shown in the manual. Since the >power LED can be reverse connected w/o harm, try it one way >and if it does not light up, reverse the plug positions. Here is a link to the manual for the Gigabyte MB. The manual for the Coolmaster is pretty shabby and does not even mention the front panel connections. http://www.gigabyte.co.nz/Support/Motherboard/Manual_DownloadFile.aspx?FileType=Manual&FileID=17967 All but one of the front panel connections has been made: RESET SWITCH, HARD DRIVE ACTIVE LED, SPEAKER, & POWER SWITCH were easy to connect. On the front panel header the one that is missing is the "MESSAGE/POWER/SLEEP LED" connection. I guess that this is where the missing green/white twisted pair of wires should go, but there is also a POWER-LED on the mother board that has no wires connected to it either. Either the "MESSAGE/POWER/SLEEP LED" on the front panel header will be left unconnected or the "POWER-LED" on the motherboard will be without a connection. Are the white wires negative? Every pair of wires that group has one white wire. That would make me think that they were negative. Three years ago when I built a computer using an Asus board, the Antec case that I used didn't label the front panel USB and 1394 cables. It took days to resolve that issue and I've been told that mixing up those connection can damage the MB. I don't know why these case builders can put a little more effort into labeling their conductors. Thanks | |||||||||||||
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Posted by John McGaw on November 22, 2007, 11:13 am
Please log in for more thread options Ajax wrote:
> I purchased a CoolMaster Centurion 5 case from New Egg to build a new
> computer. I am using a Gigabyte GA-P32-DS4 motherboard. > > There are two wires in the Centurion 5 with separate connectors that > are not labeled. They are white and green and they are twisted > together. It was my guess that they were either supposed to be > connected to the "Message/Power/Sleep Led" as listed on page 30 of the > GA-P35-DS4 manual or that they were supposed to be connected to the > "Power_LED" three prong connector on motherboard. > > The manual does not identify any of the front panel connectors though > all but these two wires are labeled on their respective connectors. > > Also, the Gigabyte manual states that the connectors should be > installed respecting the pins positive and negative assignments. All > of the Centurion front panel connectors have a white and a colored > wire. Is the white wire negative? > > The Gigabyte manual, other than noting on page 23 that there is a > "PWR_LED" header, never describes actually connecting it to anything. > > Any thoughts? > > TIA I agree that most (all?) case manuals suck but they are not the final word. It is almost always possible with some effort to simply follow the wires to where they terminate. Sometimes a bit of front panel disassembly is required but to save a serious error it is usually worth delving into the depths. I've found from experience that even well-finished cases can have rough edges where users aren't expected to delve so a bit of care is called for when poking around in these places. As for polarity of the wires (white=negative?) your guess is as good as anyone's. Given a voltage source and a current limiting resistor it is possible to find out for sure and to do so quite safely. Keep the voltage low (3V is safe for almost any LED) and keep the resistor to a value that will limit current flow to <5mA (470 Ohms is convenient). At this low current and with a LED with a high forward voltage it might actually be necessary to look at the LEDs in the dark to see the glow but damaging them in this setup would be almost impossible. -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com | |||||||||||||
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Posted by Andy on November 22, 2007, 7:08 pm
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> I purchased a CoolMaster Centurion 5 case from New Egg to build a new
>computer. I am using a Gigabyte GA-P32-DS4 motherboard. > > There are two wires in the Centurion 5 with separate connectors that >are not labeled. They are white and green and they are twisted >together. It was my guess that they were either supposed to be >connected to the "Message/Power/Sleep Led" as listed on page 30 of the >GA-P35-DS4 manual or that they were supposed to be connected to the >"Power_LED" three prong connector on motherboard. Correct. >
> The manual does not identify any of the front panel connectors though >all but these two wires are labeled on their respective connectors. > > Also, the Gigabyte manual states that the connectors should be >installed respecting the pins positive and negative assignments. All >of the Centurion front panel connectors have a white and a colored >wire. Is the white wire negative? Yes. >
> The Gigabyte manual, other than noting on page 23 that there is a >"PWR_LED" header, never describes actually connecting it to anything. This header is for power LEDs that are connected to 3-position socket connectors. >
> Any thoughts? > > TIA | |||||||||||||
>computer. I am using a Gigabyte GA-P32-DS4 motherboard.
>
> There are two wires in the Centurion 5 with separate connectors that
>are not labeled. They are white and green and they are twisted
>together. It was my guess that they were either supposed to be
>connected to the "Message/Power/Sleep Led" as listed on page 30 of the
>GA-P35-DS4 manual or that they were supposed to be connected to the
>"Power_LED" three prong connector on motherboard.
>
> The manual does not identify any of the front panel connectors though
>all but these two wires are labeled on their respective connectors.
>
> Also, the Gigabyte manual states that the connectors should be
>installed respecting the pins positive and negative assignments. All
>of the Centurion front panel connectors have a white and a colored
>wire. Is the white wire negative?
>
> The Gigabyte manual, other than noting on page 23 that there is a
>"PWR_LED" header, never describes actually connecting it to anything.
>
> Any thoughts?
>
> TIA