This quad-port 10GBASE-T adapter (RJ45) is designed for smooth 10GbE upgrades while retaining copper cabling. Powered by the XL710 series controller, it offers PCIe 3.0 x8 bandwidth with VT-c acceleration (SR-IOV, VMDq, Flow Director) and modern overlay offloads (VXLAN/GENEVE/NVGRE) to free CPU cycles in virtualized hosts. It supports PXE and host-based iSCSI boot, IEEE 1588 time sync, and Jumbo Frames up to ~9728 bytes (MTU ~9710) for high-throughput workloads. Also referred to as a PCI network adapter by users (PCIe interface), it fits 1U/2U servers or compact cases with both full-height and low-profile brackets included. Use Cat6A to 100 m for 10GBASE-T (Cat6 to 55 m); Cat5e/6/6A to 100 m for 1G/100M. For dense racks, maintain directed airflow—XL710 series controller's brief shows mean power near ~24.7 W at full 10GbE traffic, with higher peaks—so plan cooling accordingly. Ideal for ESXi/Hyper-V/KVM nodes, edge firewalls, and NAS like TrueNAS or unRAID.