What is this jumper for on my new motherboard?

Posted by jasondavis on Super User See other posts from Super User or by jasondavis
Published on 2010-04-14T23:56:11Z Indexed on 2010/04/15 0:03 UTC
Read the original article Hit count: 564

Filed under:

motherboard

|

jumpers

I am building a new PC, I just got my motherboard in the mail today. It is a ASRock X58 Extreme 3.

I am reading over the manual for it and one of the jumpers says this.

There is a 3 pin jumper labeled 1 2 3, with pins 1 and 2 shorted by default it is "+5v"

If I manually change it to short jumper pins 2 and 3 instead of 1 and 2 then it will be "+5vSB (standby) for PS/2 or USB wake up events.

So I am confused as to exactly what this is for. Can someone explain what it means, why I would want one other the other?

© Super User or respective owner

Related posts about motherboard

Motherboard Wiring

as seen on Super User - Search for 'Super User'
HI All, I bought a new case to put a motherboard in. Everything fits, I have done this before, but not in a long time! The case has wires for - Power SW - Reset SW - Power LED - HDD LED On the motherboard (ASUS M2NPV-VM) it is clearly labeled where these go, but I cannot remember where the black… >>> More
xfx 680i motherboard failure?

as seen on Super User - Search for 'Super User'
At some point last night we must have had a blip in our power, as the stove clock was blinking like it would had their been... a blip in the power. When I came into my office this morning, my desktop computer was powered down and would not turn on. Cracking the case, I can see a small blue blinking… >>> More
Current Motherboard Tech Overview

as seen on Super User - Search for 'Super User'
Welp, computer died. Time to get a new motherboard. I haven't been paying attention to the latest motherboard technology and associated models and chipsets. Can someone point me at an overview of what is currently available? I'm primarily interested in the Intel / nvidia side of things. >>> More
Processor with higher FSB than motherboard can support.

as seen on Super User - Search for 'Super User'
Hi all, Please redirect me if there is a similar question, but I have an ECS P4VXASD2+ (V5.0) motherboard, which supports a 533 MHz FSB. I want to put in a Pentium 4 3.2 GHz processor (Socket 478) with an FSB of 800 MHz. Would this be possible? Would the FSB of the processor just be limited to 533… >>> More
How to get Processor and Motherboard Id ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I use the code from http://www.rgagnon.com/javadetails/java-0580.html to get Motherboard Id, but the result is "null", <1 How can that be ? <2 Also I modified the code a bit to look like this to get processor Id : "Set objWMIService = GetObject(\"winmgmts:\\\\.\\root\\cimv2\")\n"+ … >>> More

Related posts about jumpers

Why didn't cable select work?

as seen on Super User - Search for 'Super User'
I got roped into doing tech support for a friend of the family. Obviously I'd already failed to hide my powers, ala Penny Arcade. Anyways, the guy bought a DVD burner OEM from Microcenter, and asked me to install it. So I stopped by before and thought I'd be slick and use Cable Select on the jumpers… >>> More
Motherboard jumper setting: BIOS flash write protection.

as seen on Super User - Search for 'Super User'
I have an ECS P4M800PRO-M478 motherboard and I'm just setting up the jumpers right now, of which there are only two sets. One is the CLR_CMOS jumper, which is set to Normal, of course. However, there is another set called BIOS_WP which controls whether BIOS flash writing is protected or unprotected… >>> More
What is this jumper for on my new motherboard?

as seen on Super User - Search for 'Super User'
I am building a new PC, I just got my motherboard in the mail today. It is a ASRock X58 Extreme 3. I am reading over the manual for it and one of the jumpers says this. There is a 3 pin jumper labeled 1 2 3, with pins 1 and 2 shorted by default it is "+5v" If I manually change it to short… >>> More
How can I merge multiple Compass Resources into one, with one score?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to integrate compass into my platform using the JDBC ResultSetToResourceMapping. What I want to do is set it up so that I could have multiple result set mappings, tied to one Resource, that produces one result, with one score, and a merged score. I have tried to trick Compass into doing… >>> More
How do I reset my BIOS password on a Advent 4211 Netbook?

as seen on Super User - Search for 'Super User'
The title says it all really but I was hoping for a software solution to remove the password or find out what it is or even change it. It's my laptop but I can't remember what I set the BIOS password too. I know on a PC to take out the battery and clear it with the jumpers but on a laptop I'm slightly… >>> More