HP ADP 331FLR ETHERNET 1GB 4-PORT Data rate: Four 1GbE ports, each at 2 Gbps full duplex; 8 Gbps aggregate full duplex theoretical bandwidth. 10/100/1000 Mbps, Full-duplex Bus type: PCI Express v2.0 (Gen 2 x4) (FlexibleLOM slot) Network Processor: Broadcom BCM5719 chipset; On-board buffer memory: 276 MB Wiring: Category 5 (CAT-5) or better twisted-pair cabling