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Green low-profile PCIe card with two SFP28 ports and silver bracket

HPE

HPE 640SFP28Product network card 25 Gigabit Ethernet x 2 PCIe 3.0 x8

SKU CH-CT3Q-ZZKH8 MPN 640SFP28Product

Dual-port 25 Gigabit Ethernet adapter with PCIe 3.0 x8 for HPE Apollo and ProLiant servers

  • Dual-port 25 Gigabit Ethernet delivers high-bandwidth connectivity
  • PCIe 3.0 x8 interface provides fast server integration
  • Low-profile design fits Apollo 20 2U and 4200 Gen10 servers
  • Compatible with ProLiant DL360 Gen9 and Gen10 platforms
  • Part number 817753-B21 identifies the HPE 640SFP28 adapter

Dual-port 25GbE adapter for HPE servers

The HPE 640SFP28 is a dual-port 25 Gigabit Ethernet network adapter built for select HPE ProLiant and Apollo servers. It installs in a PCIe 3.0 x8 slot and also fits a PCIe 3.0 x4 low-profile bracket. The card targets data-centre workloads that need higher throughput than 10 GbE links can provide.

Low-profile form factor keeps airflow simple

The low-profile bracket lets the adapter sit in dense 2U chassis such as the Apollo 20 without blocking adjacent slots. Passive cooling relies on server fans, so acoustic output matches the host system. Power draw scales with link speed at 10 or 25 Gbps per port.

SFP28 cages accept direct-attach

Two SFP28 cages support copper or fibre cables up to 25 Gbps each. The adapter is validated for Apollo 20 2U, 420, 4200 Gen10, Edgeline e920 and ProLiant DL360 Gen9 and Gen10 platforms. Buyers needing more than two ports or a different form factor should choose another model.

Highlights

  • Dual-port 25 Gigabit Ethernet delivers high-bandwidth connectivity
  • PCIe 3.0 x8 interface provides fast server integration
  • Low-profile design fits Apollo 20 2U and 4200 Gen10 servers
  • Compatible with ProLiant DL360 Gen9 and Gen10 platforms
  • Part number 817753-B21 identifies the HPE 640SFP28 adapter

Specifications

BrandHP

Questions about this item

How do I install the HPE 640SFP28 adapter in a PCIe 3.0 x8 slot and what step is often missed?

Insert the low-profile bracket into a PCIe 3.0 x8 or x4 slot, secure the retention screw, then attach SFP28 transceivers and cables before powering on the server.

What maintenance or replacement will the HPE 640SFP28 adapter need over time?

The adapter itself has no moving parts; plan to replace SFP28 transceivers or patch cables if link errors appear, and keep firmware current via HPE updates.

What limit appears first on the HPE 640SFP28 under sustained 25 Gigabit Ethernet loads?

Sustained throughput is bounded by the PCIe 3.0 x8 host interface and the dual 25 GbE port rate, so the bus or port ceiling is reached before adapter overheating.

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