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HPE 331FLR quad-port Gigabit Ethernet card, green PCB, metal bracket, Flexible LOM form factor

HPE

HPE 331FLR 4-port Gigabit Ethernet network card

SKU CH-Q3NC-X9TB9 MPN 331FLR

Four-port Gigabit Ethernet adapter in Flexible LOM form factor for select ProLiant Gen8 rack servers, delivering full line-rate throughput with low power consumption

  • Four ports deliver 4 Gb aggregate throughput for dense server connectivity
  • Flexible LOM form factor enables future 10 GbE upgrade path
  • Single-chip design provides full line-rate performance with low power consumption
  • Advanced offloads including Large Send, TCP checksum and VLAN tagging reduce CPU overhead
  • Supports VMware NetQueue and Microsoft VMQ for efficient virtualization workloads

Target servers and form factor

The HPE 331FLR is a Flexible LOM network interface card built for select HPE ProLiant Gen8 rack servers. It provides four 1 GbE ports on a single chip, delivering up to 4 Gb aggregate throughput while keeping power consumption low.

Virtualisation density and future speed path

This adapter suits administrators who need high port density for virtualisation, server consolidation or network segmentation in supported Gen8 platforms. Buyers who require more than four copper ports, fibre connectivity, or a card that fits standard PCIe slots in non-HPE chassis should consider other options.

Flexible LOM slot requirement

The card installs only in the dedicated Flexible LOM bay on compatible HPE ProLiant Gen8 rack servers; it will not work in a regular PCIe slot or in systems that lack this specific motherboard connector.

Highlights

  • Four ports deliver 4 Gb aggregate throughput for dense server connectivity
  • Flexible LOM form factor enables future 10 GbE upgrade path
  • Single-chip design provides full line-rate performance with low power consumption
  • Advanced offloads including Large Send, TCP checksum and VLAN tagging reduce CPU overhead
  • Supports VMware NetQueue and Microsoft VMQ for efficient virtualization workloads

Specifications

BrandHPE

Questions about this item

Does my ProLiant Gen8 rack server need an available Flexible LOM slot to install the 331FLR adapter?

Yes, the 331FLR uses the Flexible LOM form factor and requires a compatible Gen8 server slot for installation and operation.

Can the 331FLR adapter connect to my existing 10GbE network switches at reduced speed?

The 331FLR operates at 1Gb per port; it will not link to 10GbE switches, but the Flexible LOM form factor allows a future upgrade to a 10GbE adapter.

How can I verify all four ports on the 331FLR are delivering full line-rate throughput after setup?

Check the link LEDs for 1Gb connection on each port and run a multi-port traffic test to confirm 4Gb aggregate throughput with features like jumbo frames enabled.

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