HPE840140-001

(640SFP28) Dual-Port 25 GbE / 10 GbE Gigabit Ethernet Adapter

The HPE840140-001 (640SFP28) is a high-performance dual-port Gigabit Ethernet Adapter offering flexible connectivity at 10 Gb or 25 Gb speeds. Powered by a Mellanox ConnectX-4 Lx controller, it delivers scalable bandwidth and low latency, making it ideal for modern cloud, virtualization, and analytics workloads. Designed for HPC, storage access, and high VM-density deployments, this card integrates easily into HPEProLiant Gen9 and Gen10 servers. Regardless of infrastructure×whether you're transitioning to 25 GbE or maintaining 10 GbE×to deploy future-ready networking, this adapter provides a robust, enterprise-grade solution.

Features

This dual-port SFP28 adapter supports both 10 GbE and 25 GbE operation, with up to 50 Gbps per port and 100 Gbps aggregate bidirectional throughput. It connects via PCIe 3.0 x8 (backward‐compatible with x4 lane), allowing clean installation in standard low-profile slots. Its advanced networking capabilities include packet offloads, jumbo frames, QoS tagging, RoCE v2 for RDMA support, VXLAN/NVGRE encapsulation, VLAN tagging, LACP, PXE boot, and SNMP management Compatible with a wide range of operating systems and virtualization platforms, it integrates seamlessly into enterprise IT infrastructures.

Advanced Options

Engineered for enterprise resilience, the adapter offers consistent throughput and minimal latency using ConnectX-4 Lx silicon optimized for virtualization and converged workloads. It supports energy-efficient operation (~9.7 W typical power draw), helping to reduce heat and power in dense server environments

Product Key Features

• • 2 × SFP28 ports supporting 10 GbE and 25 GbE

  • Dual-port bidirectional throughput up to 100 Gbps total

  • Mellanox ConnectX-4 Lx controller for advanced networking

  • PCIe 3.0 x8 / x4 low-profile form factor

  • RDMA support (RoCE v2), VXLAN/NVGRE, QoS, jumbo frames

  • VLAN tagging, LACP, PXE boot, SNMP support

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Reliability & Performance

. The broad protocol support×including IPv6, RoCE, VXLAN, NVGRE, and advanced offloads like TSO, LSO, RSS, checksum offload, and MSI-X×minimizes host CPU utilization while maximizing network throughput and VM scalability. Certified across a wide range of ProLiant Gen9/Gen10 and Apollo servers, it ensures plug-and-play operation in existing deployments

Key Features :

• • 2 × 10/25 GbE SFP28 ports

  • PCIe 3.0 ×8 / ×4 low-profile card

  • Mellanox ConnectX-4 Lx controller

  • Bidirectional throughput up to 100 Gbps

  • Jumbo frames (9.6 KB), VLAN, LACP, PXE boot

  • RDMA over Converged Ethernet (RoCE v2), VXLAN, NVGRE, QoS

Specification	Details
Model Number	840140-001 (Option 817753-B21, Gen9/Gen10)
Product Type	Dual-Port Gigabit Ethernet Adapter
Controller	Mellanox ConnectX-4 Lx
Ports	2 × SFP28 (10 GbE or 25 GbE)
Data Rate	Up to 25 Gbps per port; 10 GbE also supported
Aggregate Throughput	Up to 100 Gbps bidirectional
Interface (Bus)	PCI Express 3.0 x8 / backward-compatible x4
Jumbo Frame Support	Up to 9.6 KB
Protocols & Features	VLAN, LACP, PXE, QoS, SNMP, IPv4/IPv6, LLDP, TSO, LSO, RSS, MSI-X
Virtualization Offloads	RoCE v2, VXLAN, NVGRE
Power Consumption	~9.7 W typical
Form Factor	Low-profile / Full-height bracket included
Compatible Server Models	HPEProLiant DL/ML/Apollo Gen9 & Gen10 series
OS & Hypervisor Support	Virtualization platforms including VMware ESXi, RHEL, SLES, Windows
Compliance & Safety	IEEE 802.1Q, 1588v2, RoHS, FCC, CISPR etc.