Hardware type:

FC (1) - Fibre channel HBA;
ETH (2) - Ethernet NIC;
iSCSI (3) - iSCSI HBA;
CNA (4) - Converged network adapter;
SAS (5) - SAS HBA;
COMBO (6) - Combo card;
NVME (7) - NVMe drive;
UNKNOWN (99) - unknown hardware type.