The SYBA 4 Port Gigabit Ethernet PCI - e x1 Network Interface Card is designed to enhance your PC's networking capabilities. It features four Gigabit Ethernet ports, allowing for multiple high - speed connections. This card adheres to the PCI Express Specification Revision 1.1 and supports a single - lane (x1) PCI Express throughput of up to 2.5Gbps. With auto - negotiation for data rates of 10/100/1000Mbps, it ensures optimal performance for various network environments. The card operates in full duplex mode, effectively doubling the speed of network connections. It is fully compliant with IEEE802.3, 802.3u, and 802.3ab standards, and supports Wake - On - LAN (WOL) functionality for added convenience.