The 2.5GS Multi-Gigabit PCIe Ethernet Card by fenvi features a Realtek RTL8126 Chip, providing support for data rates of up to 1 Gbps. This PC Card Type I Lan Card is compatible with universal brands and product lines, with a single Ethernet port for RJ-45 connections. Designed for various PCI Express slots, including x4, x1, x16, and x8, this unit offers high-speed networking capabilities for computers and servers. Ideal for boosting network performance and connectivity, this Ethernet card is a reliable addition to any system.