The ST1000SPEX2 PCIe Gigabit Ethernet Network Card adds a 10/100/1000 Mbps compatible RJ45 Ethernet…

StarTech.com dual port 40G QSFP+ network card adds two high-bandwidth 40 Gigabit fiber optic ports to your server. Features Intel XL710 chipset, MSA-compliant QSFP+ transceiver slots and full support for multimode and single-mode fiber. Ideal for demanding data centers.
This advanced network card provides two independent 40 Gbps QSFP+ ports for maximum bandwidth and redundancy. The Intel XL710-BM2 chipset supports Data Center Bridging, iSCSI offload and advanced virtualization technologies. PCIe 3.0 x8 interface with full and low profile forms available. Supports 9000 byte jumbo frames, VLAN tagging, IEEE 802.3ad link aggregation and Data Center Bridging. Compatible with 40GBASE-LR4 and 40GBASE-SR4 fiber optic technologies. Works with Dell PowerEdge, HPE ProLiant and Lenovo ThinkSystem servers. Supports Windows 7 through 11, Windows Server 2008 R2 through 2019 and Linux.