Using a fan hub

[Alexls]

http://www.deepcool.com/product/dcoolingaccessory/2013-12/12_663.shtml

Im thinking of buying this fan hub to connect 4 case fans to it
Is there going to be less power since im using 1 header for 4 fans? The fan will spin slower? This fan hub no external power

Or will power to each fan be same, just that higher current through the header?

Is it ok to use fan hub? Any negative effect on mobo?

 

[Outramkia]

Supposedly mobo fan header can support at least 1 ampere. So you see your 4 fans total how many ampere.

If u scare, buy powered fan hub. Silverstone, phanteks, corsair, nzxt have. Simple no brands one also have