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Black HPE 331FLR quad-port Ethernet adapter, plug-in card form factor

HPE

HPE 331FLRProduct 1Gb 4-port Ethernet adapter

SKU CH-N6WP-D918V MPN 331FLRProduct

A four-port Gigabit Ethernet adapter in FlexibleLOM form factor for ProLiant Gen8 and Gen9 servers, connecting via PCI Express 2.0 x4 with low power consumption

  • Product colorBlack
  • Four RJ-45 ports give dense 1Gb connectivity in a single slot
  • PCIe 2.0 x4 host interface delivers full line-rate throughput on every port
  • FlexibleLOM form factor enables future upgrade to 10GbE without replacing the server
  • Single-chip design reduces power draw while maintaining maximum port density
  • Plug-in card dimensions 4.6 by 3 inches fit select ProLiant Gen8 and Gen9 racks

HPE 331FLR 1Gb 4-port Ethernet adapter

The HPE 331FLR is a Gigabit Ethernet card built for select HP ProLiant Gen8 and Gen9 rack servers. It uses a FlexibleLOM form factor and a single-chip design to provide four RJ-45 ports. The adapter targets virtualization, security, server consolidation and network segmentation workloads. It delivers full line-rate performance on every port with low power consumption.

Four-port Gigabit capacity and headroom

Four 10/100/1000Base-T ports share a PCI Express 2.0 x4 host interface, giving each port dedicated bandwidth for simultaneous traffic. The single-chip architecture sustains full line-rate throughput across all ports for typical virtualization and segmentation tasks. Aggregate demand beyond 4 Gbps will saturate the link, so environments needing 10 GbE per port should plan a future FlexibleLOM upgrade.

FlexibleLOM integration and upgrade path

The plug-in card measures 4.6 inches by 3 inches and fits the dedicated FlexibleLOM slot in supported Gen8 and Gen9 rack servers, leaving standard PCIe slots free for other add-in cards. Twisted-pair cabling connects directly to the four RJ-45 ports without additional transceivers. The form factor reserves the option to move to 10GbE networking speeds later by swapping the module. Builds that lack a FlexibleLOM slot cannot use this adapter.

How it compares

Measured against everything we stock in Network Adapters & RJ45 Plugs, at today’s prices. Recalculated every night.

Price $250.99
Pricier than about 91% of the 1,221 comparable items (median $19.99).

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Specifications

Product
Brand nameHP
Product colorBlack

Questions about this item

Will the 331FLR adapter fit in a ProLiant Gen8 server that still uses PCI Express 2.0 slots?

Yes, the host interface is PCI Express 2.0 x4, so it installs directly into Gen8 FlexibleLOM slots without an adapter.

How can I confirm the four RJ-45 ports are running at 1000Base-T after installation?

Check the link LEDs on each port; a steady green indicates a negotiated 1000 Mbps connection on twisted-pair cabling.

Does the 331FLR package include the low-profile bracket needed for a 4.6-inch half-height slot?

The adapter ships as a plug-in card in FlexibleLOM form factor; mounting hardware is supplied with the server chassis, not the adapter.

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