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Green printed circuit board with metal bracket and two SFP+ ports

HP

HP 665249-B21 Ethernet 10Gb 2-Port 560SFP+ Adapter

SKU CH-PREJ-BV65B

A dual-port 10GbE SFP+ adapter with 256MB memory delivering up to 40Gb bi-directional throughput for HP ProLiant G7 and Gen8 servers via PCIe x8 Gen 2

  • TypePCIE Wi-Fi Adapter
  • Dual 10 Gb SFP+ ports deliver 40 Gb bi-directional throughput
  • Intel 82599 controller ensures proven server-grade reliability
  • 256 MB integrated memory handles high packet loads
  • PCIe x8 Gen 2 slot fits ProLiant G7 and Gen8 servers
  • Scalable 1 Gb to 10 Gb consolidation reduces port count

HP 665249-B21 10Gb Dual-Port SFP+ Adapter

This HP Ethernet adapter provides two 10Gb SFP+ ports for ProLiant G7 and Gen8 servers. It is based on the Intel 82599 controller and includes 256MB of integrated memory. The card installs into a PCIe Gen 2 x8 slot and delivers up to 40Gb bi-directional throughput per adapter.

Low-profile design with passive cooling

The adapter uses a low-profile form factor suited for dense server chassis. It relies on system airflow for thermal management without an onboard fan, keeping acoustic output negligible. Power consumption remains modest for a dual-port 10Gb controller, drawing only what the PCIe slot supplies during typical operation.

Sustained throughput for virtualized workloads

Under continuous load the Intel 82599 maintains line-rate performance across both ports simultaneously. The 256MB buffer absorbs traffic bursts without packet loss during heavy virtualization or storage replication. The dual-port layout supports link aggregation for redundancy or doubled bandwidth in demanding production environments.

Highlights

  • Dual 10 Gb SFP+ ports deliver 40 Gb bi-directional throughput
  • Intel 82599 controller ensures proven server-grade reliability
  • 256 MB integrated memory handles high packet loads
  • PCIe x8 Gen 2 slot fits ProLiant G7 and Gen8 servers
  • Scalable 1 Gb to 10 Gb consolidation reduces port count

Specifications

TypePCIE Wi-Fi Adapter

Questions about this item

How do I install the HP 665249-B21 adapter and which step is often missed?

Insert the card into a PCIe x8 Gen 2 slot on an HP ProLiant G7 or Gen8 server, then attach SFP+ transceivers and cables; the step often missed is seating the transceivers fully until they click.

What maintenance or replacement will the 560SFP+ adapter need later?

The adapter has no moving parts; only the SFP+ transceivers or cables may need replacement if links degrade, while the 256 MB integrated memory and Intel 82599 controller require no service.

What limit appears first under sustained 10 GbE loads on this adapter?

Each port is rated for 10 Gb/s; the PCIe x8 Gen 2 interface provides up to 40 Gb/s bi-directional total bandwidth, so the per-port 10 Gb/s ceiling is reached before the bus saturates.

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