Asus Z9PH-D16 - Manual (Page 184)

6-38 Chapter 6: Driver installation
4. Type the following commands before you install the driver:
cd /[folder name]
./mlnxofedinstall
5. All other Mellanox, OEM, OFED, or distribution IB packages will be removed.
Press <Y> to continue.
6. The system starts uninstalling the previous version of OFED.