Hello
I have one question.
At routerboard 532 with extension card what power supply do we neeed ?
The original pack 12V that the board was shipped, is ok or we need bigger one to work fine ?
I have 4 Atheros CM9 minipci on it .
Help please
No one knows ?
The CM9 draws just under 2W, so 4x 2W is 8W. The RB532 specs claim it draws 6W so that’s a grand total of 14W maximum.
At 12v this is a little over an amp, so you really want a power supply capable of at least 1.5A at 12v.
I’m not sure what the specs on the supply you have are however this should point you in the right direction. 
OK
Thanks