Chip: Realtek RTL8111H Transmission rate: up to 1000 Mbps Gold plating and durability: Thick gold finger plating for the contact interface provides anti-oxidation, anti-corrosion, and wear resistance. This design supports stable operation and helps reduce packet loss to improve data transmission performance. High compatibility: Windows 7/8/x/10, Windows Server 2008R2/2012/2016/2019, Linux 2.6.31-4.11.x LTS versions only Chip model: RTL8111H Use scenarios: - Upgrade a desktop PC or workstation to gigabit Ethernet for faster file transfers, smoother streaming, and improved network responsiveness. - Deploy in a small server or network attached storage (NAS) setup to ensure stable and efficient high-speed LAN connectivity. - Replace a damaged or aging Ethernet interface in legacy systems to restore reliable network access without changing existing software.