Add four wired Gigabit ports to a Cisco server platform without consuming extra slots. The AddOn UCSC-PCIE-IRJ45-AO uses a PCI Express 2.0 x4 host interface and Intel 82580 chipset to deliver quad RJ-45 connectivity for server workloads that depend on stable copper networking. This card is built for environments where port density matters. Instead of adding multiple single-port adapters, one quad-port NIC can simplify cabling, reduce slot pressure, and keep the server layout cleaner. That matters in dense racks, virtualization hosts, and infrastructure nodes where every expansion slot has a purpose. The result is a practical upgrade path for teams that need more Ethernet interfaces on Cisco-compatible systems while staying within a familiar hardware ecosystem. With four ports and server-focused design, it supports network segmentation, redundant paths, and service separation without overcomplicating the deployment.