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HPE 10/25Gb dual-port 640SFP28 network adapter card

HPE

HPE 817753-B21 10/25Gb 2-Port 640SFP28 Adapter

SKU CH-1P5J-CZKEN

A dual-port network adapter delivering 10 or 25 gigabit Ethernet over optical fibre via a PCI Express 3.0 x8 slot

  • Dual-port 10/25 GbE throughput for high-bandwidth workloads
  • PCI Express 3.0 x8 interface delivers 25000 megabits per second
  • Two SFP28 cages support optical fiber connectivity
  • Lightweight 245-gram design fits dense server configurations
  • Model 817753-B21 validated for HPE desktop compatibility

Network adapter for desktop servers

The HPE 817753-B21 is a dual-port Ethernet adapter built for desktop systems. It connects through a PCI Express 3.0 x8 slot and supports optical fibre links at 10 or 25 gigabits per second. The card targets environments that need high-throughput, low-latency networking over SFP28 transceivers.

Thermals noise and power profile

The adapter weighs 245 grams and uses a standard low-profile bracket suitable for dense chassis. Passive cooling relies on system airflow; no onboard fan is present. Power draw scales with link speed and cable length but remains within the PCIe slot budget for typical 25 gigabit operation.

Included bracket and driver support

A low-profile bracket is supplied to fit half-height slots. Driver packages are available for common server operating systems and enable features such as VLAN tagging, jumbo frames and hardware offloads. No transceivers or cables are bundled with the card.

How it compares

Measured against everything we stock in 2-in-1 Device Accessories, at today’s prices. Recalculated every night.

Price $85.99
Pricier than about 70% of the 7,473 comparable items (median $56.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How is the 640SFP28 adapter installed in a PCI Express 3.0 x8 slot and what step is often missed?

Insert the card firmly into an open PCI Express 3.0 x8 slot, secure the bracket screw, then attach compatible SFP28 transceivers and fibre cables; the step often missed is installing the transceivers before cabling.

What maintenance or replacement will the 2-port 10/25Gb Ethernet adapter need over time?

The adapter itself has no moving parts; plan to replace SFP28 optical modules or fibre patch cords if links degrade, and keep driver firmware current through the OS update channel.

What limit appears first on the 25000 megabits per second ports during sustained throughput?

The PCI Express 3.0 x8 host bus and the 25 Gbps per-port line rate set the ceiling; sustained traffic will hit the 25 Gbps per-port limit before the bus saturates.

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