A Fibre Channel (FC) card—often called an HBA—provides lossless SAN connectivity over 16/32/64G FC, unlike Ethernet NICs that carry IP traffic such as iSCSI and NVMe/TCP. An Ethernet card, commonly known as a Network Interface Card (NIC), is a hardware component that allows devices to connect to a network, typically a Local Area Network (LAN). Copper Ethernet NICs still have their place, but when bandwidth, distance. Fibre Channel (FC) technology has long been the foundation of high-speed, reliable storage area networks (SANs) in enterprise environments. Known for its ultra-low latency, lossless transmission, and strong security, FC enables efficient and stable communication between servers and storage systems.