[SOLVED] What is the use of this nub in my case

[mrb00ce]

I bought a new case corsair spec 01 and when i was looking if all the standoffs were in the right place i saw something. Few days ago i found what it was and i saw it in a Linus tech tips video this one First Person View PC BUILD Guide! (POV) - YouTube at 17:45 he says it is used to hold the motherboard in the right place, but i had some trouble getting my motherboard in the "nub"and my questions is will it short my motherboard?

 

[Ralston18]

The nub is, as I understand it, just a centering pin used to initially align the motherboard.

I would not expect the nub to cause or create a short.

What sort of "troubles" occurred?

Is/was there anything on the underside of the motherboard that may have gotten or otherwise been in the way?

How did you go about installing the motherboard?

For example, if you immediately tightened any screws then there was no "wiggle room" left for the motherboard to shift a bit as other screws were installed.

Just my thoughts on the matter.

 

[mrb00ce]

The nub is, as I understand it, just a centering pin used to initially align the motherboard.

I would not expect the nub to cause or create a short.

What sort of "troubles" occurred?

Is/was there anything on the underside of the motherboard that may have gotten or otherwise been in the way?

How did you go about installing the motherboard?

For example, if you immediately tightened any screws then there was no "wiggle room" left for the motherboard to shift a bit as other screws were installed.

Just my thoughts on the matter.

I just found it difficult to align the motherboard with the standoffs because of the nub and i had difficulty getting the nub in the hole of the motherboard

 

[Ralston18]

Hopefully overall just a tight fit.

And the motherboard is now fully in place - correct?

I would expect that all should be okay as long as nothing was forced, bent into place, twisted, etc..

For future reference one thing you can do (without the motherboard in place) is to first run the screws in and out of the standoffs a couple of times.

Much like the by hand threading shown in the video at 19:20 or so. I would do all of standoffs though.

Loosens things up and verifies that all of the screws smoothly drive into the standoffs with no need for force.

That can make it much easier to install the motherboard.

No cross-threading or other jams.... 😱

 

[mrb00ce]

Hopefully overall just a tight fit.

And the motherboard is now fully in place - correct?

I would expect that all should be okay as long as nothing was forced, bent into place, twisted, etc..

For future reference one thing you can do (without the motherboard in place) is to first run the screws in and out of the standoffs a couple of times.

Much like the by hand threading shown in the video at 19:20 or so. I would do all of standoffs though.

Loosens things up and verifies that all of the screws smoothly drive into the standoffs with no need for force.

That can make it much easier to install the motherboard.

No cross-threading or other jams.... 😱

I did took out 2 standoffs and put them at the right place but its the nub is kinda hard to fit i hope it doesn't hurt the board.

 

[Ralston18]

If in doubt - wait.... Do not risk the board.

Check the underside of the motherboard - anything getting in the way of its' alignment?

There may be other ideas and suggestions.

If possible take a couple of photographs and post here using imgur (www.imgur.com).

A close up of the nub would be relevant along with the current arrangement of standoffs.

Someone may spot something astray.

 

[geofelt]

Nothing should be forced.

If you think you need to force something, there is probably something that you are doing wrong.
When inserting the motherboard into the case, it sometimes requires a bit of pressure to get it to seat to the rear i/o plate that can have a spring fit.
I think the nub is a way to lever the motherboard into the rear plate.
Otherwise, it seems to take three hands to install.
One to hold the motherboard in place, one to fit the screw, and one to turn the screwdriver.
A couple of tips on this:

Buy yourself a long #2 magnetic tip screwdriver. It will hold screws and is useful to pick up dropped screws in the case.

Test each of the motherboard screws in the standoffs first.
Many case screws may look similar but have different threads.

When starting a screw, first give it a small counterclockwise turn until you feel a click.
That lets you start the screw properly avoiding stripped screws.

 

[Paperdoc]

Stand-0ffs have two functions. One is mechanical support for the mobo, and the second is to provide a GROUND connection from the mobo to case at those points only. SOME mobos do NOT have a mounting hole in the centre of the 3x3 mounting hole pattern. For those situations, some cases come with a special stand-off mounted in the centre location that does NOT have a threaded hole. Instead it has a rubber dome on it. This will provide mechanical support but NOT provide any electrical contact with the mobo bottom. This avoids any Ground caused by a metal stand-off under a mobo that has NO mounting hole in that location.