817753-B21 HPE Ethernet 10/25Gb 2-port SFP28 MCX4121A-ACUT Internal Ethernet / Fiber 25000 Mbit/s

Name: 817753-B21 HPE Ethernet 10/25Gb 2-port SFP28 MCX4121A-ACUT Internal Ethernet / Fiber 25000 Mbit/s
Brand: HPE
SKU: 817753-B21-VHBRSN
Price: 122.85 USD
Availability: InStock
Rating: 5 (8 reviews)

Mfr. Part #: 817753-B21

Brand: Hpe

Condition: New

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Ethernet 10/25Gb 2-port SFP28 MCX4121A-ACUT

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overview

specifications

resources

faqs

reviews

overview

817753-B21 Overview

HPE 817753-B21 Ethernet 10/25gb 2p 640sfp28 Network Adapter

Ethernet 10/25Gb 2-port SFP28 MCX4121A-ACUT Adapter

Wired

PCI Express 3.0 Ethernet / Fiber

25000 Mbit/s

Internal Component for: Server

Summary Description

HPE Ethernet 10/25Gb 2-port SFP28 MCX4121A-ACUT. Internal. Connectivity technology: Wired, Host interface: PCI Express, Interface: Ethernet / Fiber. Maximum data transfer rate: 25000 Mbit/s

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specifications

Specifications

Overview

Condition	New
Brand	HPE
Stock	In Stock

Ports & interfaces

Connectivity technology	Wired
Host interface	PCI Express
Interface	Ethernet / Fiber
Fiber ports quantity	2
Fiber optic connector	SFP28
PCI version	3.0

Network

Maximum data transfer rate	25000 Mbit/s
Networking standards	IEEE 802.1Q, IEEE 802.1Qaz, IEEE 802.1Qbb, IEEE 802.1Qbg, IEEE 802.1ab, IEEE 802.1ad, IEEE 802.1p, IEEE 802.3ae, IEEE 802.3au, IEEE 802.3az, IEEE 802.3x
Ethernet LAN data rates	10000,25000 Mbit/s
Jumbo frames support	Yes
Quality of Service (QoS) support	Yes
LAN controller	Mellanox ConnectX-4 Lx EN

Design

Component for	Server
Internal	Yes
Compatible products	HPE ProLiant DL120 Gen9 Server 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 ML350 Gen9 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 Gen9 Server

Power

Power consumption (typical)	8.4 W

Operational conditions

Operating temperature (T-T)	5 - 60 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	10 - 90%
Storage relative humidity (H-H)	5 - 95%

Sustainability

Sustainability certificates	RoHS

Logistics data

Harmonized System (HS) code	85176990

resources

Resources

Documents

817753-B21-brochure-datasheet

faqs

Frequently Asked Questions

What servers are compatible with the HPE 817753-B21-VHBRSN 10/25Gb SFP28 NIC? +

This network interface card is specifically designed for integration with select HPE ProLiant Gen10 and Gen10 Plus servers. It leverages the Mellanox ConnectX-4 Lx chipset to ensure seamless hardware compatibility and firmware optimization within the HPE ecosystem, providing reliable high-speed connectivity for data-intensive enterprise workloads.

Can I use the HPE MCX4121A-ACUT for both 10GbE and 25GbE networking? +

Yes, this dual-port SFP28 adapter is fully flexible and supports both 10GbE and 25GbE speeds depending on the transceiver or DAC cable installed. This versatility allows you to standardize your server infrastructure on a single card model while transitioning your network core from 10GbE to 25GbE as your bandwidth requirements evolve.

How does this NIC help reduce CPU overhead in high-traffic virtualized environments? +

The HPE Ethernet 10/25Gb 2-port adapter features advanced offload technologies, including hardware-based stateless offloads for TCP/UDP and IP protocols. By processing network traffic directly on the controller, the card significantly reduces the CPU utilization burden on the host server, freeing up valuable processing cycles for your core business applications and virtual machines.

What type of optical or copper cabling is required for this 2-port SFP28 card? +

The card utilizes industry-standard SFP28 cages, which accept a wide range of connectivity options. You can deploy SFP28 Direct Attach Copper (DAC) cables for short-reach top-of-rack connections, or utilize SR/LR optical transceivers for longer fiber runs. Always ensure the optics used are qualified for your specific HPE switch environment to maintain stable link integrity.

Does the HPE 817753-B21 support advanced features like RDMA or RoCE? +

This adapter is built on Mellanox ConnectX-4 technology, which provides robust support for Remote Direct Memory Access (RDMA) over Converged Ethernet (RoCE). Implementing RoCE with this card allows for extremely low-latency communication between servers, which is essential for accelerating high-performance computing tasks, database clustering, and storage-heavy enterprise applications.

What is the typical use case for deploying a 25GbE NIC in a modern data center? +

Deploying 25GbE adapters is the current standard for modernizing data centers, as they provide 2.5 times the bandwidth of traditional 10GbE connections while fitting into the same physical footprint. This makes them ideal for environments running high-density virtualization, cloud-native container workloads, and flash-based storage arrays that require massive throughput and reduced bottlenecks.

Is any specific licensing required to enable full functionality on this HPE NIC? +

HPE networking adapters generally do not require additional feature-based software licenses for basic operations or hardware offloading. The card functions immediately upon installation when paired with the correct HPE-provided drivers. We recommend regularly updating your server's Service Pack for ProLiant (SPP) to ensure the card's firmware remains compatible with your latest operating system environment.

How should this 2-port NIC be managed within a large-scale server environment? +

Management is streamlined through standard industry tools, including HPE iLO and the server's UEFI BIOS. These interfaces allow you to configure port settings, view link status, and perform firmware updates remotely without needing physical access to the server. Integration with standard networking stacks ensures compatibility with common Linux and Windows-based monitoring protocols.

How can I obtain a bulk quote for multiple HPE 817753-B21-VHBRSN units? +

If you are planning a large-scale server refresh or infrastructure upgrade, our sales team is ready to assist. Please contact us directly through the BuyRouterSwitch.com quote request portal with your SKU and required quantity. We specialize in volume procurement and can provide competitive pricing structures to support your specific project budgetary requirements and procurement timelines.

Why should I purchase my HPE networking hardware through BuyRouterSwitch.com? +

BuyRouterSwitch.com is a trusted source for high-quality enterprise networking equipment. By sourcing directly through our platform, you ensure that you are receiving authentic hardware designed for demanding data center environments. We focus on providing a secure and professional procurement experience, helping IT managers source the exact components they need to maintain stable, high-performance network infrastructure for their organizations.

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