Needed another 10Gbe connection temporarily, this negated me buying another nic
ESXi 7.0 and Mellanox ConnectX 2 - support fix patch - vDan
ConnectX-2 NICs is NOT listed on the compatibility guide with ESXi 7.0. Here is a fix ESXi7-enable-nmlx4_co.v00.sh how to solved it.
vdan.cz