A Small Form-factor Pluggable (SFP+) network card is a type of network interface card (NIC) that is used to connect computers to a network. It is a compact, hot-pluggable transceiver that supports data rates of up to 10 Gbps. It is designed to be used in high-speed networking applications such as 10 Gigabit Ethernet, Fibre Channel, and InfiniBand. SFP+ cards are typically used in servers, switches, and routers, and are available in a variety of form factors, including PCIe, USB, and SFP+. They are also available in a variety of speeds, including 10G, 25G, 40G, and 100G. SFP+ cards are an ideal choice for high-speed networking applications, as they offer superior performance and reliability.