Expand a server or workstation with four independent RJ-45 Ethernet ports in a single PCIe x4 slot. This AddOn Networks adapter is built for environments where port density matters more than consumer-grade extras, giving IT teams a straightforward way to add wired connectivity for segmented traffic, lab systems, or multi-NIC deployments. With support for 10/100/1000 Mbps Ethernet, it fits common enterprise copper networks and keeps deployment simple on existing infrastructure. The quad-port design reduces the need for multiple single-port adapters, which can free up slots and simplify cable management in dense systems. That makes it a practical choice for administrators who want predictable network access without overbuying capacity they will not use. For procurement teams, the value is in the balance: four ports, PCIe x4 compatibility, and a design focused on dependable wired access. It is a sensible upgrade when you need more interfaces per chassis and want to keep the bill of materials tight while still meeting operational requirements.