Not enough fan headers on mobo

[OmriJ]

My mobo has one 4 pin CPU fan connector and one 3 pin "chasis fan" connector. I wanted to add 2 more case fans and I dont know how. Can I use this cable to split the cpu fan header safely without ruining anything/damaging the cpu? https://www.ebay.com/i/152637049666 

if so, do the case fans have to be 4 pin or 3 pin works with 4 pin headers? 

I added a picture of the link in case it doesnt work

[W-L]

1 minute ago, OmriJ said:

My mobo has one 4 pin CPU fan connector and one 3 pin "chasis fan" connector. I wanted to add 2 more case fans and I dont know how. Can I use this cable to split the cpu fan header safely without ruining anything/damaging the cpu? https://www.ebay.com/i/152637049666 

if so, do the case fans have to be 4 pin or 3 pin works with 4 pin headers?

You can use splitters on the motherboard header but note the amperage you will be drawing with the fans since you don't want to exceed the header's max rating. A good rule of thumb is 3-4 fans per header depending on the fan of course. 

 

You can run 3 pin fans on a 4 pin header just note that your header if it is setup as 4 pin PWM control will only run the fans at full speed. 

[OmriJ]

5 minutes ago, W-L said:

You can use splitters on the motherboard header but note the amperage you will be drawing with the fans since you don't want to exceed the header's max rating. A good rule of thumb is 3-4 fans per header depending on the fan of course. 

 

You can run 3 pin fans on a 4 pin header just note that your header if it is setup as 4 pin PWM control will only run the fans at full speed. 

Thank you for replying

how can I tell the headers max rating?

the mobo is asus p8h61-m le r2.0

http://dlcdnet.asus.com/pub/ASUS/mb/LGA1155/P8H61-M_LE_R2.0/E8000_P8H61-M_LE_R2.pdf?_ga=2.239589386.841461875.1510442293-1240796502.1510442293

[johndms]

8 minutes ago, OmriJ said:

My mobo has one 4 pin CPU fan connector and one 3 pin "chasis fan" connector. I wanted to add 2 more case fans and I dont know how. Can I use this cable to split the cpu fan header safely without ruining anything/damaging the cpu? https://www.ebay.com/i/152637049666 

if so, do the case fans have to be 4 pin or 3 pin works with 4 pin headers?

I have two of these - https://www.newegg.com/Product/Product.aspx?Item=N82E16812423163 - Each has three NZXT 140mm fans.

 

I've read somewhere not to exceed 1.0A per header, but perhaps the newer or better quality boards may be able to handle more. Those NZXT Fans use 0.14 A (0.30 A max.), so three of them max would be 0.9.

 

[OmriJ]

1 minute ago, johndms said:

I have two of these - https://www.newegg.com/Product/Product.aspx?Item=N82E16812423163 - Each has three NZXT 140mm fans.

 

I've read somewhere not to exceed 1.0A per header, but perhaps the newer or better quality boards may be able to handle more. Those NZXT Fans use 0.14 A (0.30 A max.), so three of them max would be 0.9.

 

Alright ill get one like this. 

just to be sure, the cpu fan isnt different than any other case fan in terms of connection/amperage right? Will splitting its connector cause damage is what im asking. 

[johndms]

Just now, OmriJ said:

Alright ill get one like this. 

just to be sure, the cpu fan isnt different than any other case fan in terms of connection/amperage right? Will splitting its connector cause damage is what im asking. 

I'm no expert on voltage and amps, but I'd be cautious with splitting the CPU fan header. There may be a sticker on the fan, though, that may tell how much current it draws. It may be safer to contact Asus and inquire if the CPU fan header can support multiple fans. I think you're right, however, the fans should generally be the same power-wise. CPU Fans are generally designed to be more 'forceful' (static pressure) to push air through a heat sink, but that's just fan blade design.

 

Note, that when using a splitter, you can only control the individual speeds of all the fans as a group. All the other fans will run at the speed/amperage of the primary fan. The splitter I have has one connector with 4 pins, the rest only have 3 (but still support 4-pin fans). You can see what I'm talking about in one of the Newegg images. Splitting a CPU fan header may cause the other fans to behave oddly depending on CPU temperature.

[OmriJ]

3 minutes ago, johndms said:

I'm no expert on voltage and amps, but I'd be cautious with splitting the CPU fan header. There may be a sticker on the fan, though, that may tell how much current it draws. It may be safer to contact Asus and inquire if the CPU fan header can support multiple fans. I think you're right, however, the fans should generally be the same power-wise. CPU Fans are generally designed to be more 'forceful' (static pressure) to push air through a heat sink, but that's just fan blade design.

 

Note, that when using a splitter, you can only control the individual speeds of all the fans as a group. All the other fans will run at the speed/amperage of the primary fan. The splitter I have has one connector with 4 pins, the rest only have 3 (but still support 4-pin fans). You can see what I'm talking about in one of the Newegg images. Splitting a CPU fan header may cause the other fans to behave oddly depending on CPU temperature.

I understand what you mean. Thank you very much for the help and have a good day