Cabling of the TBS6981

Hi,
I just installed the card and connected only one of the three addtional power plug. Is this correct or Do I have to connect all 3 plug of the additional power supply ?
Grettings R.
I just installed the card and connected only one of the three addtional power plug. Is this correct or Do I have to connect all 3 plug of the additional power supply ?
Grettings R.