HP Server Network Cards — ProLiant NICs & FlexibleLOM

HPE-branded Ethernet adapters for every ProLiant generation

About Server Network Cards

HPE ProLiant servers use a unique FlexibleLOM architecture that separates the network adapter from the motherboard — giving you the freedom to choose 1GbE, 10GbE, or 25GbE connectivity without replacing the entire server board. We carry the full lineup of HPE-branded Ethernet adapters, from the entry-level 331i quad-port 1GbE to the high-performance 640SFP28 dual-port 25GbE.

All our HPE NICs carry genuine HP spare part numbers (e.g., 789897-001, 817709-B21, 727055-B21) and are fully compatible with iLO monitoring and HPE firmware updates. This ensures zero compatibility warnings in the Integrated Lights-Out management console and full support for HP Smart Array and Agentless Management features.

Popular HPE Server Network Adapters

Ethernet 1Gb 4-port 331i (665240-B21) — embedded NIC for DL360/DL380 Gen8-Gen9
Ethernet 10Gb 2-port 533FLR-T (700759-B21) — FlexibleLOM 10GBASE-T for Gen9/Gen10
Ethernet 10Gb 2-port 560SFP+ (665249-B21) — popular SFP+ adapter for iSCSI/NFS
Ethernet 10/25Gb 2-port 640SFP28 (817753-B21) — Gen10/Gen10+ 25GbE standard
InfiniBand HDR100 MCX653106A (P06251-B21) — 100Gb for HPC clusters

Need to identify your current NIC? Run ilorest list --type HpeNetworkAdapter from iLO or check the Network Adapters section in iLO5. Contact our team with the output for a guaranteed-compatible replacement.

Featured Server Network Cards Products

Browse all 2,435 Server Network Cards SKUs.

Server Network Cards in stock, by speed

Live count of HP and HPE server network cards that are priced, photographed and ready to ship, taken from our own catalogue on 23 October 2026. Prices are what you pay, not a list price.

Speed	Cards available	Price range	Average
25GbE	18	$47.37 – $1,184.21	$254.83
10GbE	190	$47.37 – $2,057.89	$281.56
1GbE	189	$68.42 – $780.95	$187.35
8Gb FC	31	$71.58 – $3,648.58	$309.02
4Gb FC	33	$68.33 – $943.37	$216.47

Need several of one speed? Paste the part numbers into the quick order pad, or ask for a bulk quote.

Frequently Asked Questions

What is a FlexibleLOM in HP ProLiant servers?

FlexibleLOM (Flexible LAN on Motherboard) is HPE's modular network adapter slot built into ProLiant server motherboards. Unlike a standard PCIe NIC, a FlexibleLOM card sits flush with the rear I/O panel and does not occupy a PCIe expansion slot. You can swap between 1GbE, 10GbE, and 25GbE FlexibleLOM cards to change your base network connectivity without adding expansion cards.

What is the difference between 533FLR-T and 560SFP+?

The 533FLR-T uses 10GBASE-T (RJ45 copper) and works with standard Cat6a cabling up to 100 meters. The 560SFP+ uses SFP+ optical or DAC transceivers. Choose 533FLR-T for existing copper infrastructure and shorter runs. Choose 560SFP+ for data center deployments with fiber optics, lower latency, and lower power consumption at 10GbE speeds.

Can I upgrade the NIC in an HP DL380 Gen10 without downtime?

The FlexibleLOM slot requires the server to be powered off for replacement. However, if you add a PCIe NIC as a secondary adapter, you can configure NIC teaming (bonding) first, then swap the FlexibleLOM during a maintenance window. For true hot-swap networking, consider HPE Synergy with Virtual Connect fabric modules.