If you'll have a look at the HO Qlogic 4x QDR IB PCI-e G2 HCA overview (see: https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c01951526 ) then you'll find that this card is based on the Mellanox Connectx-2 IB technology, in which unfortunately is not supported by Mellanox WinOF-driver v5.35 (supports only ConnectX-3 / Connect-X 3 Pro ) - see: http://www.mellanox.com/related-docs/prod_software/MLNX_VPI_WinOF_Release_Notes_Rev_5.35.pdf
WinOF driver v4.80 is the last Mellanox driver that supports ConnectX-2 based adapters over Windows 2012 R2. Can be retrieved from Mellaox website
In case adapter is still not revealed properly by “device-manager” then suggesting to apply to HP/Qlogic and ask to advice you if & what driver & FW they can supply to that adapter.
Generally speaking – Mellanox already declared Connectx-2 adapters as EOL