Single-chip, quad-port, 1 Gb Ethernet Flexible LOM designed for maximum throughput & high port density. The HP Ethernet 1 Gb 4-port 331FLR Adapter for select HP Pro Liant Gen 8 rack servers features the next generation of Ethernet integration, offering a single-chip solution in a Flexible LOM form factor, which offers the option for future upgrades to 10 Gb E networking speeds. It delivers full line-rate performance across all ports with low power consumption. The HP 331FLR is ideal for virtualization, security, server consolidation, network segmentation, & other applications requiring maximum throughput & port density. The total aggregate throughput of 4 Gb meets the needs of customers desiring high bandwidth. The HP 331FLR supports advanced features such as Large Send & Receive offload capability, TCP checksum & segmentation, VLAN tagging, MSI-X, jumbo frames, IEEE 1588, HP Sea of Sensors 3D & virtualization features such as VMware Net Queue & Microsoft VMQ. Support for HP Sea of Sensors 3D Technology enhances server performance while reducing energy use & expense. The HP 331FLR Flexible LOM is designed for maximum throughput & high port density. Replaceable FLexible LOM enables easy upgrade from 1 Gb E to 10 Gb E. An aggregate, full duplex transfer rate of 8 Gbps per adapter delivers outstanding network performance that improves response time & removes bottlenecks. Comprehensive stateless offloads optimize host efficiency & VM density by leaving host CPU available for other duties. Virtualization support for VMware Net Queue & Microsoft VMQ help meet the performance demands of consolidated virtual workloads. Support for MSI/MSI-X provides performance benefits for multi-core servers by load balancing interrupts between CPUs/cores.