Feature: 1. Transfer Rate: PCI express network card provides simple connection to Gigabit Ethernet with transfer rates of 10/100/1000Mbps/2.5Gbps. 2. Interface: PCIe network adapter for network card bus interface PCIE X1, for any PCI Express x1, x2, x4, x8 or x16 slot. 3. Compatibility: With extremely fast speeds and ultra low latency, the network card is backward compatible with Fast Ethernet and Gigabit Ethernet and can automatically negotiate between high speed and low speed connections. 4. Support OS: PCI express gigabit ethernet card supports for XP, for WIN7, for WIN8, for WIN10 and other systems with wide compatibility. 5. Heat Sink: The Ethernet card uses a heat sink to reduce the network temperature and ensure that the card works stably and lasts longer, and can be used for servers, soft routing, ROS, ESXI, PX, remote wakeup, aggregation, etc. Specification: Item Type: 2.5Gbps PCIe Network Adapter Material: PCB Type: Single Port Network Adapter Bus Interface: PCIE X1 LED Indicator: Yes Network Cable Interface Type: RJ45 Transmission Rate: 10/100/1000Mbps/2.5Gbps Network: Ethernet. Package List: 1 x 2.5Gbps PCIe Network Adapter