PCIe 1x to 4 Port RJ45 Gigabit Ethernet Network Card Compatible with RTL8111H Chipset Multi Port RJ45 NIC for Desktop and Server

Four Port Gigabit Ethernet Expansion -- This PCIe 1x to four port gigabit network adapter provides 10 100 1000 Mbps high speed Ethernet connectivity for desktop computers home lab servers and small business networks supporting reliable wired LAN performance.
Compatible with RTL8111H Chipset -- Built with an RTL8111H compatible controller, the multi port NIC delivers stable low latency data transfer ideal for virtualization software based routers NAS systems and network intensive workflows.
PCI Express 1.1 Interface for Wide Compatibility -- Supports PCIe 1x slot and is compatible with PCIe 1x 4x 8x and 16x slots offering easy installation in workstations towers and server systems. Supports CSMA CD full duplex flow control for efficient data handling.
Four RJ45 Ports for Multi Network Applications -- Equipped with four independent RJ45 Ethernet ports this adapter is suitable for firewalls pfSense OPNsense load balancing WAN aggregation and multi network segmentation environments.
Durable Design and Broad OS Support -- Features an operating temperature range from 0 to 70 degrees Celsius and wide humidity tolerance. Compatible with Windows 10 8 7 Vista XP and Windows 2000 for seamless integration into new or legacy systems.