Gigabit Ethernet PCI Express PCI-E network card 10/100/1000Mbps LAN Adapter RJ45 connection port Driver-free for Desktop PC Specifications: Compliant with PCI Express rev 1.1 specification. Compliant with CSMA/CD protocol Supports Windows XP/Vista/7 32/64-bit, Server 2003 32/64-bit, Linux LED Data Transmission Indicators Supports ACPI Power Management, compliant to ACPI 2.0 Data Transfer Rate:10/100/1000 Mbps Chipset:Realtek RTL8111C External Ports:1x RJ-45 Ethernet Port Host Interface:PCI Express (PCI-E) Package includes: 1 * Network card LAN adapter