Fangrui Product Details M.2 A+e Rtl8111f Gigabit Ethernet Adapter, Supports 10/100 / 1000mbps Full-duplex/half-duplex Adaptive Network. It Supports Sending Gigabit Super Long Frames, And Can Provide Bidirectional Data Mission Of Up To 1000mbps. Use It To Implement Gigabit Networking To The Desktop And Improve Network Performance. Backwards Compatible With 10/100base-t Systems, So It Can Easily Be Plugged Into Almost Any Existing Network Using A Cat-5 Cable. It Is Suitable For Multiple Market Segments And Emerging Applications Such As Desktops, Workstations, Servers, Communication Platforms And Embedded Applications. Product Features : Bus Type: M.2 A/e Key 2230 Integrated 10/100/1000m Ceiver High Performance 1000base-t Ethernet Controller Card Backward Compatible With 10/100base-t Network 10/100/1000mbps Data Rate Auto-negotiation Operation Compatible With Existing Cat-5 Utp Cables Fully Compliant With Ieee802.3, Ieee802.3u, Ieee802.3ab Supports Half/full Duplex Mode And 802.3x Flow Control Support Ieee802.1p Layer2 Priority