INTEL I350 SERIES NETWORK CARD: High-performance PCIe 4-port network card featuring Intel I350-AM4 chipset adds four gigabit open SFP slots to a desktop or server; Supports IPv4, IPv6, TCP/UDP offloading, link aggregation UNLOCKED 1GB SFP SLOTS: Works with any Singlemode/Multimode MSA-compliant or branded SFP/direct attach copper cable (DACC) module; 1Gbps (full-duplex) bandwidth per port; Fiber enables longer cable runs than copper cabling while being immune to EMI COMPATIBILITY: Works with Windows Server 2012 & up, Windows 10 & up, Linux, VMware ESXi 7.x, and Microsoft Hyper-V; PCI Express Network Adapter Card is compatible with PCIe version 2.1/2.0 and works in PCI Express x2, x4, x8, x16 expansion slots THOUGHTFUL DESIGN: LED indicators for port status/activity monitoring, as well as to assist with troubleshooting; Gigabit Ethernet NIC features a built-in heatsink to keep controller chips running cool and ensure reliable, sustained performance IT MANAGEABILITY: PXE boot enabled for centralized OS deployment and updates; 9K jumbo frame support for reduced packet overhead; VLAN tagging support for efficient network management; Supports Intel Virtualization Technology (VT-c, VMDq, SR-IOV)