HPE Dual Port 640SFP28 SFP+ 10/25Gb Ethernet Network Adapter
$249.00
$216.52
In stock
Only 1 left
SKU
840140-001
The **HPE 640SFP28** is a dual-port, PCI Express 3.0 x8 (auto-sensing down to x4) 25-Gigabit Ethernet adapter, built to deliver high-performance, low-latency connectivity for modern ProLiant and server environments. Each of the two SFP28 ports supports 25 GbE - while maintaining backward compatibility with 10 Gb SFP+ optics and DACs - giving flexibility across diverse deployment scenarios.
Under the hood, the 640SFP28 is powered by a Mellanox ConnectX-4 Lx network processor and offers up to 100 Gb/s aggregate bi-directional bandwidth (50 Gb/s per port).
It comes with a robust feature set including support for jumbo frames (MTU up to 9.6 KB), VLAN tagging (802.1Q), IPv4/IPv6, TCP/IP offload (checksum, segmentation), LSO, RSS, MSI-X, PXE/UEFI boot support, and overlay networking offloads such as VXLAN/NVGRE - making it ideal for storage networks, high-density virtualization, high-I/O workloads, and converged traffic.
Moreover, the 640SFP28 supports RDMA over Converged Ethernet (RoCE), reducing latency and CPU overhead - a critical advantage for database clusters, virtual machine migration, high-frequency messaging, and other latency-sensitive applications.
This adapter is flexible to order and install - available with a standard or low-profile bracket depending on your server chassis - and ships with the high-profile bracket by default. Transceivers and DACs are sold separately.
Full Spec Sheet:
[https://www.hpe.com/psnow/doc/c04849446?utm](https://www.hpe.com/psnow/doc/c04849446?utm)
Supplied with a high profile bracket.
Transceivers sold separately.
Under the hood, the 640SFP28 is powered by a Mellanox ConnectX-4 Lx network processor and offers up to 100 Gb/s aggregate bi-directional bandwidth (50 Gb/s per port).
It comes with a robust feature set including support for jumbo frames (MTU up to 9.6 KB), VLAN tagging (802.1Q), IPv4/IPv6, TCP/IP offload (checksum, segmentation), LSO, RSS, MSI-X, PXE/UEFI boot support, and overlay networking offloads such as VXLAN/NVGRE - making it ideal for storage networks, high-density virtualization, high-I/O workloads, and converged traffic.
Moreover, the 640SFP28 supports RDMA over Converged Ethernet (RoCE), reducing latency and CPU overhead - a critical advantage for database clusters, virtual machine migration, high-frequency messaging, and other latency-sensitive applications.
This adapter is flexible to order and install - available with a standard or low-profile bracket depending on your server chassis - and ships with the high-profile bracket by default. Transceivers and DACs are sold separately.
Full Spec Sheet:
[https://www.hpe.com/psnow/doc/c04849446?utm](https://www.hpe.com/psnow/doc/c04849446?utm)
Supplied with a high profile bracket.
Transceivers sold separately.
| Alternative Part Numbers | 840140-001 |
|---|---|
| Condition | Used |
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