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HPE Network Adapters | HPE ETH 10/25GB 2P 640FLR-SFP28 ADPT | 817749-B21 | ServersPlus
HPE 817749-B21 |

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Manufacturer Part Code: 817749-B21

Order Code: COHEW-817749B21

Category: HPE Network Adapters

ETH 10/25GB 2P 640FLR-SFP28 ADPT

Stuck in network traffic at 10Gbps? Time to take the Express Lane with HPE 25GbE Adapters. With the rise in volume of mobile data and video and the frequency in which it's accessed, legacy technologies are struggling to handle the increased throughput and lack the capabilities to cost-effectively scale. Current approaches to managing the increasing data center traffic require higher bandwidth and are cost prohibitive, keeping organizations from easily growing as their needs grow. The HPE Ethernet 25Gb 2-port 640 FLR-SFP28 Adapter is a FlexibleLOM form factor for select HPE ProLiant Gen9 Server DL family of rack and HPE Apollo Servers that delivers high-performance solutions to Telco, services providers, financial institutions and enterprises to meet higher bandwidth demand.


Address the Increasing Demand for an Overlay Network
The HPE Ethernet 25Gb 2-port 640 FLR-SFP28 Adapter reduces the impact of overlay networking on host performance with tunnel offload support for VXLAN and NVGRE, increasing VM migration flexibility and network scale with minimal impact to performance.

Decouples virtual overlay network layer from the physical NIC performance.

Auto negotiates to 10GbE for immediate future proofing.

More Efficient and Faster Way to Send Data with RDMA Over Converged Ethernet (RoCE)
The HPE Ethernet 25Gb 2-port 640 FLR-SFP28 Adapter bypasses the TCP/IP stack and removes of a data copy step reducing overall latency to deliver accelerated performance for applications such as Microsoft® Hyper-V® Live Migration, Microsoft SQL® and Microsoft SharePoint with SMB Direct.

RDMA over Converged Ethernet (RoCE) for greater server efficiency and lower latency.

Lower Latency and Higher Throughput with Messaging Accelerator (VMA)
The HPE Ethernet25Gb 2-port 640 FLR-SFP28 Adapter reduces system latency for improved performance specifically for high-frequency trading operations while maintaining high message rates and hundreds of simultaneous connections.

Contains VMA, an included firmware with many benefits such as lower latency, higher throughput, improved CPU utilization and minimal buffer copies between user data and hardware.

Business IT purchase over £1000? Spread the cost on a monthly basis with our flexible leasing options.

Technical Information

Compatible products
HPE ProLiant DL160 Gen9 Server HPE ProLiant DL360 Gen9 Server HPE ProLiant DL360 Gen10 Server HPE ProLiant DL380 Gen9 Server HPE ProLiant DL380 Gen10 Server HPE ProLiant DL385 Gen10 Server HPE ProLiant DL560 Gen9 Server HPE ProLiant DL580 Gen9 Server HPE ProLiant DL560 Gen10 Server HPE ProLiant DL580 Gen10 Server HPE Apollo 2000 - XL1x0r Gen9 Server HPE Apollo 4200 Gen9 Server HPE Apollo 4500 – XL450 Gen9 Server HPE Apollo 6000 – XL230a Gen9 Server HPE Apollo 6000 – XL250a Gen9 Server HPE Apollo 6500 – XL270d Gen10 Server
Power consumption (typical)
10.5 W
Maximum data transfer rate
100000 Mbit/s
Ethernet LAN
Networking standards
IEEE 802.1Q,IEEE 802.1Qau,IEEE 802.1Qaz,IEEE 802.1Qbb,IEEE 802.1Qbg,IEEE 802.1ab,IEEE 802.1p,IEEE 802.3ad,IEEE 802.3ae,IEEE 802.3az,IEEE 802.3x
Quality of Service (QoS) support
Jumbo frames support
Ethernet interface type
10 Gigabit Ethernet, 25 Gigabit Ethernet
Operating relative humidity (H-H)
8 - 90%
Storage temperature (T-T)
-40 - 70 °C
Operating temperature (T-T)
5 - 60 °C
Processor model
Built-in processor
Connectivity technology
Host interface
PCI Express
PCI version
Sustainability certificates
90 g
13.7 mm
121.1 mm
76.7 mm

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