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turnign power on/off using b450 tomahawk out of case

2018amdbuild
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Hi, I'm trying to run my pc build out of case first and do a couple of things with it before it goes inside the case - install OS, test stability, OC it. I'm using the b450 tomahawk as my case and I cant tell which set of pings are for turning the power on as none of them have "power" or "reset" as labels, I intend to use a flat head screwdriver for a splits second to bridge the gap between the pins for the power.. Similarly I'd like to know how I can turn it off outside of the box, as an open air build. Could anyone give me some pointers? I'm doing this in order to make any wiring / build changes I need to make before putting everything together in the case (have yet to add HDD's).

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Look for the labels close to the pine they may be a bit farther than you thought and you missed them.

Also, check the manual, it should have a section detailing the front panel connections

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So I found this thing called a b450 tomahawk manual and it had this photo.

image.png.3731c5a73b05ef418a403c6faf308c52.png

"And I'll be damned if I let myself trip from a lesser man's ledge"

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4 minutes ago, 2018amdbuild said:

Hi, I'm trying to run my pc build out of case first and do a couple of things with it before it goes inside the case - install OS, test stability, OC it. I'm using the b450 tomahawk as my case and I cant tell which set of pings are for turning the power on as none of them have "power" or "reset" as labels, I intend to use a flat head screwdriver for a splits second to bridge the gap between the pins for the power.. Similarly I'd like to know how I can turn it off outside of the box, as an open air build. Could anyone give me some pointers? I'm doing this in order to make any wiring / build changes I need to make before putting everything together in the case (have yet to add HDD's).

I presume you mean motherboard instead of case... it should say in the manual

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1 minute ago, Velcade said:

So I found this thing called a b450 tomahawk manual and it had this photo.

image.png.3731c5a73b05ef418a403c6faf308c52.png

 

1 minute ago, Grockle88 said:

I presume you mean motherboard instead of case... it should say in the manual


Yeah found it in the mobo manual now that you've pointed it out, so for power on i would just bridge the top row, and to turn off would I do the same thing?

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After reading a second time, did you find the set of pins first? They are named something like JFP1 or Panel1. Check the manual!

 

About running it out of the case, yeah, you can. Check it is sitting on a non conducted surface (cardboard or wood will work) and be careful not to drop a screw or something metallic on the MOBO while it is running

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Just now, Isgolo said:

After reading a second time, did you find the set of pins first? They are named something like Panel 1. Check the manual!

 

About running it out of the case, yeah, you can. Check it is sitting on a non conducted surface (cardboard or wood will work) and be careful not to drop a screw or something metallic on the MOBO while it is running

Found the pins, see above posts, have it on my desk top at the moment.

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4 minutes ago, 2018amdbuild said:

Yeah found it in the mobo manual now that you've pointed it out, so for power on i would just bridge the top row, and to turn off would I do the same thing?

You don't bridge the entire row.  Honestly if looking in the manual wasn't your first thought on pin layout I'd steer clear of bridging pins.

 

Just bring your case close to your motherboard and hook up the Power + and Power - wires.  Then use the power button.

"And I'll be damned if I let myself trip from a lesser man's ledge"

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4 minutes ago, 2018amdbuild said:

Found the pins, see above posts, have it on my desk top at the moment.

Ok, to turn on short the pins for a moment.

To turn off short briefly to let the SO shutdown or hold to force it. If you have no SO it will shutdown inmediatly

Bridge only the power pins!

 

Also you could do as velcade said and use the buttons on the case, it will be easier

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1 minute ago, Velcade said:

You don't bridge the entire row.  Honestly if looking in the manual wasn't your first thought on pin layout I'd steer clear of bridging pins.

 

Just bring your case close to your motherboard and hook up the Power + and Power - wires.  Then use the power button.

 

I meant the two pins on the top row for power, as outlined by the manual, sorry. I may consider hooking up the case wires like you suggested as it seems like a good halfway point.

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