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The HPE840134-001 (also known as 817762-B21) 620QSFP28 Network Adapter provides ultra-high-performance networking with a single QSFP28 port that carries four independent 25 GbE lanes. It's engineered for modern data center servers,especially HPE ProLiant Gen10 and Apollo series, delivering 100GbE bandwidth in a compact, low-profile design.
This adapter leverages the QLogic (now Marvell) 45604 chipset to deliver robust performance and extensive offload features×including RoCE, SR-IOV, and jumbo frames×for latency-sensitive workloads like virtualization, HPC, and cloud computing
Although the QSFP28 port structure suggests 100Gb operation, most implementations deliver four discrete 25 GbE links rather than a single 100GbE channel.The card includes an active cooling fan to stabilize temperatures in dense server environments, ensuring consistent throughput under full load.
1 × QSFP28 port supporting 4 × 25 GbE lanes (up to 100 Gb/s aggregate)
QLogic/Marvell 45604 chipset for proven performance and reliability
PCI Express 3.0 x8/x16 host interface (depending on bracket)
Supports RoCE, SR-IOV, VLAN, jumbo frames, RSS, MSI-X offloads
Low-profile form factor, active onboard fan for thermal control
Compatible with HPEProLiant Gen10 servers and Apollo line
Installation is straightforward×usually via PCIe 3.0 x8 interface (though x16 brackets exist)×and both low-profile and full-height versions are available for flexible integration across server designs.. It delivers advanced networking offloads such as TCP/UDP/IP checksum, TSO, RSS, LSO, and PTP support, minimizing CPU load and maximizing packet processing efficiency.. Compatible with virtualization platforms like VMware, Microsoft Hyper-V, and Linux distributions, this adapter is trusted for enterprise-scale reliability and versatility.
Single QSFP28 port carrying 4 × 25 GbE lanes
QLogic/Marvell 45604 network chipset
PCIe 3.0 x8/x16 host interface
RoCE v2, SR-IOV, VLAN tagging, jumbo frames, RSS, MSI-X offloads
Active onboard cooling fan
Low-profile plug-in card for HPEserver compatibility
Virtualization and HPC-optimized network partitioning (NPAR)
Precision Time Protocol (PTP) support
Broad OS and firmware support on HPEProLiant and Apollo servers
| Specification | Details |
|---|---|
| Model Number | 840134-001 (also 817762-B21) |
| Adapter Type | QSFP28 Single-Port 100 GbE (4 × 25 GbE lanes) Network Adapter |
| Chipset | QLogic / Marvell 45604 |
| Interface | PCI Express 3.0 x8 (or x16 bracket) |
| Port Configuration | 1 × QSFP28 port (supports breakout to 4 × 25 GbE) |
| Aggregate Speed | Up to 100 Gb/s |
| Form Factor | Low-profile or full-height plug-in card with active cooling fan |
| Supported Features | RoCE, SR-IOV, VLAN, jumbo frames, RSS, MSI-X, TSO, PTP |
| OS Compatibility | Windows, Linux, VMware ESXi (via HPE-supported drivers/firmware) |
| Supported Servers | HPEProLiant Gen10, Apollo Series |
| Operating Power | Approx. 19 W typical |
| Weight / Dimensions | Compact card with small heatsink and fan |

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