Add four copper network ports to a Cisco server without changing the platform design. This AddOn quad-port Ethernet adapter delivers 1 GbE connectivity through a PCI Express 2.0 x4 host interface, giving infrastructure teams a practical way to increase port density for access, aggregation, or segmented traffic paths. Built on the Intel 82580 chipset, the card is suited for server deployments where stable wired connectivity matters more than consumer-grade extras. The open RJ-45 design keeps cabling straightforward, while the plug-in card form factor fits standard expansion workflows in rack-mounted systems. For teams standardizing on Cisco hardware, this adapter provides a direct-fit networking option with the port count needed to support multiple services from a single slot. It is a strong choice when you need more copper interfaces, predictable deployment, and a lifetime warranty that supports long service cycles.