Asus Z8PH-D12/IFB - Manual (Page 163)

ASUS Z8NH-D12 Series 6-35
4. Type the command line and install the driver.
5. All other Mellanox, OEM, OFED, or distribution IB packages will be removevd.
Press <Y> to continue.
6. The system starts uninstalling the previous version of OFED.