I3 pro B printer Printer not found via usb

[Jokalander]

Hello guys,
I have assembled my printer and downloaded FTDI USB SERIAL DRIVER as well as the Repetier-Host version for mac.
Anyways my mac is not able to find the printer despite the usb cable is connected and via "about this mac" I can see that the usb is indeed connected.
Whenever I try to connect it via the Repetier Host it doesn*t show the needed port.

Any suggestions on what I missed or need to try to make it work?

Thank you

[Tomyuan]

Have you tried to check your board USB serial chip type?
Check it then install the correct one.
http://www.geeetech.com/forum/viewtopic ... 974#p81974