Kilo Sierra

Hi all, I have some questions and i hope you can help me. I‘ve 9 Pure Plus 12 Fans, on one of the Controller you can install 5 Fans and on the other 5 too. so now i‘ve installed all the Fans and i want to connect the Controller 1 with controller 2. controller 1 is connected with power cable 4PIN Molex and USB 2.0 9PIN to Motherboard. whats about the second controller ? Does he need to connect as same as controller 1? in the description there is just anything about the Bridge Cable but nothing about power or usb for the 2nd controller. i hope you can help me. sry for my bad English, I’m from Germany.