Feature: 1. Integrated 10M BASE-T and 100/1000M/2.5G BASE-T 802.3 compatible transceiver. 2. Supports 2.5G Lite (1G data rate) mode. 3. Auto-Negotiation with Extended Page capability (XNP)4. Compatible with NBASE- Alliance PHY Specification. 5. Supports PCI 2.1. 6. Supports pair swap/polarity/skew correction7. Crossover Detection & Auto-Correction. 8. Supports 1- 2.5/5Gbps PCI Bus9. Supports hardware ECC (Error Correction Code) function. 10. Supports hardware (Cyclic Redundancy Check) function11. Transmit/Receive on-chip buffer support. 12. Supports PCI (Message Signaled Interrupt) and -XSupports power down/link down power saving/PHY disable modeSupports ECMA-393 ProxZzzy Standard for sleeping hostsSupports LTR (Latency Tolerance Reporting)Wake-On-LAN and & 39;RealWoW& 39; Technology (remote ) supportSupports 32-set 128- Frame pattern exact matchingSupports WPI (Wake Packet Indication)Supports PCIe L1 substate L1.1and L1.2Compatible with IEEE 802.3, IEEE 802.3u, IEEE 802.Supports IEEE 1588v1, IEEE 1588v2, IEEE 802.1AS time synchronizationSupports IEEE 802.1Qav credit-based shaper algorithmSupports IEEE 802.1P Layer 2 Priority EncodingSupports IEEE 802.1Q VLAN taggingSupports IEEE 802.1ad Double VLANSupports IEEE 802.3az (Energy Efficient Ethernet)Supports IEEE 802.3bz (2.5GBase-T)Supports Full Duplex flow control (IEEE 802.3x)Supports jumbo frame to 16K bytesSupport ESXI 6.7(7.0 not support)Support Black Dress/PVE/Ikuai/Unraid 6.9.2/OpenWrtSystem Requirements:Windows OSLinux, OS and PCI -enabled system with an available PCI slotcolor: BlackMaterial: ABS+MetalPackage Contents:1 x PCI Express Adapter Card1 x Low Profile BracketOnly 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.