Question Can’t figure out what this symbol means

[SY3]

https://imgur.com/zbHgzCq

View: https://imgur.com/zbHgzCq
. The symbol is CN2.

I want to change my fan and I don’t know which pin is GND. The original fan had 2 black wires, now I want to connect a 4-pin fan.
Thank you

 

[drivinfast247]

Be careful in there! Are you swapping fans?

 

[ODuffer]

Connector 2 ? You could probably do with a circuit diagram.

 

[SY3]

Be careful in there! Are you swapping fans?

Yes, and I don't know how to turn around the new 4-pin connector

 

[SY3]

Connector 2 ? You could probably do with a circuit diagram.

The datasheet doesn't show anything usefull

 

[drivinfast247]

Yes, and I don't know how to turn around the new 4-pin connector

What are you trying to accomplish?

 

[SY3]

What are you trying to accomplish?

I am trying to install a new fan. The PCB has only a 2 pin connector for fans and I can't figure out which one is GND.

 

[Grobe]

Don't think that just because the PSU are disconnected from mains, it means it's safe - because it i not safe !

Also, in my opinion - if you don't know the basic of multimeters and use that to figure out what is connected to each other, then how can you determine the safety of what you're doing?

Also - don't think that a electric shock through your hand isn't capable to cause long term nerve issues - because it can. It is a good reason why the manufacturers place stickers labeled "danger don't open" on their power supplies.

 

[SY3]

Don't think that just because the PSU are disconnected from mains, it means it's safe - because it i not safe !

Also, in my opinion - if you don't know the basic of multimeters and use that to figure out what is connected to each other, then how can you determine the safety of what you're doing?

Also - don't think that a electric shock through your hand isn't capable to cause long term nerve issues - because it can. It is a good reason why the manufacturers place stickers labeled "danger don't open" on their power supplies.

I am not going to buy a multimeter just for that. It would be preferable to connect the fan to the PSU, but since it became so complicated I just connected it to my motherboard. + the fan connector fits only one way, overwise it hits the wall.
My PC doesn't consume more than 350W at max load so I should be fine.

 

[Grobe]

I am not going to buy a multimeter just for that.

Unless you have some tool to determine polarity or access to the schematic (very doubtful as only repair shops approved by manufacturer may have access) then there is no way of telling.

 

[DSzymborski]

I am not going to buy a multimeter just for that. It would be preferable to connect the fan to the PSU, but since it became so complicated I just connected it to my motherboard. + the fan connector fits only one way, overwise it hits the wall.
My PC doesn't consume more than 350W at max load so I should be fine.

The fact that you don't see a need for a multimeter while working on a component that uses electricity and that you have ignored all the warnings because "350W max load," which makes no sense in this context, indicates that you do not remotely have the base of knowledge to tinker with a PSU safely. We do not keep threads that can be a danger to the safety of others open.

My advice to you is to recycle this PSU and replace it before you possibly destroy your components, burn down your house, or kill yourself.

And @Vic 40 , I deleted your post as well. Now, you did nothing wrong at all (so please don't take this as some kind of demerit), and your willingness to assist someone is greatly appreciated, but given the dangers the OP is completely dismissing as irrelevant, it's safer to not give them any advice that may have the effect of making them more confident in tinkering with their PSU.