Features 1、A variety of places, use as you like (office, Internet cafe, monitoring, data server, etc.). 2、RTL8111E master chip. 3、Gold-plated PCI-E gold finger. 4、10/100/1000mbps Gigabit LAN, speed network. 5、Full duplex flow control (IEEE 802.3 3x) is supported. Plug and play. Specification Features: A variety of places, use as you like (office, Internet cafe, monitoring, data server, etc.). RTL8111E master chip. Gold-plated PCI-E gold finger. 10/100/1000mbps Gigabit LAN, speed network. Fully compliant with IEEE802.3, 802.3ab, 802.3u, 802.3 3x, 802.1q, VLAN. Supported operating system: for Windows 98SE / Windows ME / Windows 2000 / XP / Vista / Windows 7/8/10 / Mac / Linux/Unix, etc. With the baffle, adapt to different models of the chassis. Specifications: Controller Processor: for Realtek RTL8111E Support data rate: 10M, 100M, 1Gbps (1000mbps) Compliant with PCI Express 1.0a revision. Interface: PCI Express x1 interface, compatible with PCI Express x1, x4, x8, x16 slots. Size: Approx. 120 * 70 * 20mm / 4.72 * 2.76 * 0.79in Package list: 1 x Network Card