LinuxQuestions.org
Register a domain and help support LQ
Go Back   LinuxQuestions.org > Forums > Non-*NIX Forums > General
User Name
Password
General This forum is for non-technical general discussion which can include both Linux and non-Linux topics. Have fun!

Notices

Reply
 
Search this Thread
Old 04-26-2013, 12:37 PM   #1
newbiesforever
Senior Member
 
Registered: Apr 2006
Location: Glendale, AZ
Distribution: Distro-homeless. Lost.
Posts: 1,868

Rep: Reputation: 62
what is a -5 power connector?


I'm going to buy a power supply tester to see whether my five-year-old power supply is anywhere near failure (though I've seen no obvious signs). Some testers mention that, by design, they do not light up for the -5 connector (because it apparently has been phased out). What does a -5 connector look like?--I googled it but couldn't find a picture (the search results were giving me pictures of different cables and connectors), and don't know whether my motherboard has one.

(There is a stock photo of my board; I hope it's helpful.) All I know is that -5 is not the smaller, square white connector to the upper left of the CPU, because that one says +5 on the board, not -5.
Is -5 part of the larger, rectangular cable connection to the right of the RAM slots? I shined my flashlight around it for a -5 marking (looking on the board, because that's where the +5 for the other cable is), but didn't see one (though it may be covered by all the cables). Finally I shut everything down (was trying to avoid doing that) to examine the cables. It's been so long since I unplugged the motherboard power cables that I'd forgotten this one was two separate cables in the same port. I guess the larger one can't be -5, because it's labeled +20; what about the smaller one (same size and shape as the +5 connector)? I can't read what it says, because the paint is partly obliterated, but it has a three-letter word, not numbers.
Attached Images
File Type: jpg image050.jpg (18.7 KB, 11 views)

Last edited by newbiesforever; 04-26-2013 at 12:40 PM.
 
Old 04-26-2013, 02:24 PM   #2
smallpond
Senior Member
 
Registered: Feb 2011
Location: Massachusetts, USA
Distribution: Fedora
Posts: 1,399

Rep: Reputation: 332Reputation: 332Reputation: 332Reputation: 332
-5V does not have a separate connector, it is part of the old ATX power connector and not supplied on the new ones. See this pic:

http://pcpowersupply.files.wordpress...ply-pinout.jpg
 
Old 04-26-2013, 04:35 PM   #3
newbiesforever
Senior Member
 
Registered: Apr 2006
Location: Glendale, AZ
Distribution: Distro-homeless. Lost.
Posts: 1,868

Original Poster
Rep: Reputation: 62
Yes, but I have the 20-pin connector with a four-pin connector that is separate but plugs into the same port. My motherboard dates back to 2008.
 
Old 04-26-2013, 08:32 PM   #4
rknichols
Senior Member
 
Registered: Aug 2009
Distribution: CentOS
Posts: 1,380

Rep: Reputation: 587Reputation: 587Reputation: 587Reputation: 587Reputation: 587Reputation: 587
Quote:
Originally Posted by newbiesforever View Post
Yes, but I have the 20-pin connector with a four-pin connector that is separate but plugs into the same port. My motherboard dates back to 2008.
Then your motherboard has a 24-pin connector and does not use -5V. The power supply is provided with what is called a "20+4" connector, allowing it to be used with either a 20-pin or 24-pin motherboard, and probably does provide -5V on pin 18 of its 20-pin connector (which would mate with the unused pin 20 of the motherboard's 24-pin connector).
 
Old 04-26-2013, 08:53 PM   #5
newbiesforever
Senior Member
 
Registered: Apr 2006
Location: Glendale, AZ
Distribution: Distro-homeless. Lost.
Posts: 1,868

Original Poster
Rep: Reputation: 62
Quote:
Originally Posted by rknichols View Post
Then your motherboard has a 24-pin connector and does not use -5V. The power supply is provided with what is called a "20+4" connector, allowing it to be used with either a 20-pin or 24-pin motherboard, and probably does provide -5V on pin 18 of its 20-pin connector (which would mate with the unused pin 20 of the motherboard's 24-pin connector).
Thank you; that's what I needed to know.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
which power connector should I use for SATA? newbiesforever General 4 12-14-2008 01:36 AM
power company idiots cut power while system was on, now hangs at boot with # prompt shroomy_bee Linux - Newbie 10 07-04-2008 12:12 AM
molex power connector for electronics computer_tom General 3 06-06-2006 07:26 AM
LXer: Linux Networx partners with CEI to power 2X visualization power of ... LXer Syndicated Linux News 0 04-26-2006 03:03 AM
my power supply connector.. tricky_linux Linux - Hardware 7 08-03-2003 10:28 PM


All times are GMT -5. The time now is 12:24 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration