Dual Port 10G Ethernet Card PCIE

November 2024, arrival:
10GB 10 gigabit power port network card with intel x540 chip removed from the server
the NIC is not brand new, the overall color is good ，shop warranty 3 months
applicable to Pcie x8 /x16 slots, good compatibility [Machine incompatible returnable]]
x540nic rate supported: 100MB/1GB/10GB
x540 Nic rate not supported: 2.5GB/5GB rate [connecting such devices will reduce the speed to 1g]] dual port 10 Gigabit Intel X540-T2 chip] [10GB RJ45 electrical ports * 2]]
functions: supports SR-IOV virtualization, direct connection, and aggregation.
Warranty: 3 months
interface: PCIe v2.1 (5.0 GT/s)  x8 Lane
environment: server/desktop/workstation 【PCIE x8/x16 slot 】 operating Rate: supports 100MB/1GB/10GB, and does not support 2.5G/5G.
Applicable: aikuai /black Qunhui /Windows/linux/pve/unraid/Esxi/openwrt, etc.
Here, the black Qunhui system is used to test the transmission speed of the NIC:
the overall speed is kept at about 1Gb/S, and the performance is stable and reliable. ----------------------------------------------------------------------------------------------------------------------- Currently, server and desktop motherboard slots are PCIE 2.0 /3.0, which can play the performance of X540 Nic

SR-IOV standard allows efficient sharing of PCIe devices among virtual machines
supports SR-IOV Nic: gigabit Nic (1GB) includes: i350 series 10 Gigabit Nic (10GB) includes: X520、X540、X550 more than 10 gigabit NICs (40GB/100GB) include: X710、XXV710、XL710、X722、E810 PCI-SIG SR-IOV requires the support of operating systems and hardware platforms.
Some systems support Express through some PCI SR-IOV * slots, but not on some other slots
for SR-IOV support on the system, see the manufacturer's documentation.
SR-IOV Hardware requirements
1.  the CPU must support IOMMU (such as Intel VT-d or AMD AMD-Vi),
supports PCI-SIG * Single Root I/O Virtualization and Sharing(SR-IOV) in BIOS
2. network cards that support SR-IOV must be inserted into expansion slots with bus bandwidth greater than X8.