“第一次看到會認風扇的power”= may be identify by too much under-AMP, 12V/0.5A vs 0.14A
台達12V/0.5A暴力扇= if you connect to Molex 4 pin 可以啟動 [if you Have another PSU/COMPUTER], you should know the polarity of the wire for sure.
"還有一個問題就是不管是哪一家的風扇和power , 紅線一定是+12V(或+5V) , 黑線一定是GND嗎 ?? 這是國際標準嗎 ?? 謝謝您的回答 !!!!"
At least in USA, they have very strict code, and many power are UL certified like SEASONICS, it must follow US code.