Feature: 1.High Performance Network Adapter: The IPCIe network card is a PCIe to 4-port 2.5G Ethernet network adapter that supports speeds of up to 2500 Mbps. 2.Extensive System Compatibility: This network adapter supports multiple operating systems and platforms, including for Hackintosh, ESXI 6.7 (not compatible with 7.0), PVE, ikuai, unraid 6.9.2, and OpenWrt. It is plug-and-play for Windows systems, while Linux, TrueNAS/FreeNAS, certain versions of OpenWrt, and older versions of ikuai may require driver installation. 3.Advanced Network Standard Support: This PCI Express gigabit ethernet card supports multiple Ethernet standards, including IEEE802.3bz (2.5 GBase-T), IEEE802.3az (Energy-Efficient Ethernet), IEEE802.3, IEEE802.3u, and IEEE802.. It ensures device performance while maintaining excellent energy efficiency. 4. For DSM 6.2 and above versions and ESXI 6.7U3, driver installation is required, while PVE 7.0 and above versions come with built-in plug-and-play support. 5. Driver download URL: https://.realtek.com/-/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software Specification: Main control chip: RTL8125BG Interface type: PCI-E x4 Network speed: Supports 2.5 Gigabit Ethernet speed, backward compatible with Gigabit Ethernet speed Number of network ports: 4 port 2.5G Gigabit network ports (capable of connecting four devices simultaneously) Applicable device: desktop computer (requires motherboard with PCI-E slot) Compatibility: Compatible with most operating systems, such as for Windows, Linux, etc. Material: PCB+metal colour: green+black+silver Package Contents: 1 x 2.5G PCIe Network Card 1 x Low profile stand Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.