P31246-B21 HPE Ethernet 100Gb 1-port QSFP28 PCIe3 x16 MCX515A-CCAT Internal Ethernet / Fiber 100000 Mbit/s

Name: P31246-B21 HPE Ethernet 100Gb 1-port QSFP28 PCIe3 x16 MCX515A-CCAT Internal Ethernet / Fiber 100000 Mbit/s
Brand: HPE
SKU: P31246-B21
Price: 171.00 USD
Availability: InStock
Rating: 5 (8 reviews)

Mfr. Part #: P31246-B21

Brand: Hpe

Condition: Refurbished

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Ethernet 100Gb 1-port QSFP28 PCIe3 x16 MCX515A-CCAT

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overview

specifications

resources

faqs

reviews

overview

P31246-B21 Overview

HPE P31246-B21 Ethernet 100gb 1-port Qsfp28 Pcie3 X16 Mcx515a-ccat Adapter.

Ethernet 100Gb 1-port QSFP28 PCIe3 x16 MCX515A-CCAT Adapter

Wired

PCI Express 3.0 Ethernet / Fiber

100000 Mbit/s

Internal Component for: Server

Summary Description

HPE Ethernet 100Gb 1-port QSFP28 PCIe3 x16 MCX515A-CCAT. Internal. Connectivity technology: Wired, Host interface: PCI Express, Interface: Ethernet / Fiber. Maximum data transfer rate: 100000 Mbit/s

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specifications

Specifications

Overview

Condition	Refurbished
Brand	HPE
Stock	In Stock

Ports & interfaces

Connectivity technology	Wired
Host interface	PCI Express
Interface	Ethernet / Fiber
Fiber ports quantity	1
Fiber optic connector	QSFP28
PCI version	3.0

Network

Maximum data transfer rate	100000 Mbit/s

Design

Component for	Server
Internal	Y

Logistics data

Harmonized System (HS) code	85176990

resources

Resources

Documents

P31246-B21-brochure-datasheet

faqs

Frequently Asked Questions

What are the primary performance advantages of the HPE P31246-B21 100Gb NIC? +

This HPE Ethernet adapter leverages the Mellanox ConnectX-5 chipset to deliver high-bandwidth 100Gb connectivity. By utilizing the PCIe 3.0 x16 interface, it effectively minimizes CPU overhead and reduces latency for data-intensive applications. It is engineered to handle massive throughput requirements, making it an ideal choice for high-performance computing, storage area networks, and demanding virtualization environments that require reliable, low-latency network traffic management.

Is the HPE P31246-B21 compatible with existing HPE ProLiant server infrastructure? +

Yes, the P31246-B21 is specifically designed for seamless integration with HPE ProLiant rack and tower servers. Because it adheres to industry-standard PCIe form factors, it fits securely into compatible expansion slots. We recommend verifying your specific server model’s PCIe riser configuration and physical slot dimensions to ensure proper thermal management and electrical compatibility within your chassis before deployment.

What type of transceiver modules are required for the QSFP28 port on this card? +

The QSFP28 port on this adapter supports a variety of 100GbE optical transceivers and direct-attach copper (DAC) cables. To achieve optimal signal integrity, you must use HPE-qualified QSFP28 optics that match your specific fiber cabling infrastructure, such as SR4 for multi-mode fiber or LR4 for long-reach single-mode applications. Always ensure the optics selected meet the reach requirements of your data center architecture.

How does the Mellanox ConnectX-5 architecture improve network virtualization? +

The integrated ConnectX-5 controller provides advanced offloading capabilities, including hardware-based support for overlay networks like VXLAN and NVGRE. By offloading these complex encapsulation tasks from the host CPU, the card allows your virtual machines and containers to achieve near-line-rate performance. This architecture is vital for modern software-defined data centers looking to maintain efficiency while scaling virtualized network workloads.

What are the recommended use cases for this single-port 100GbE adapter? +

This card is best utilized in scenarios requiring massive uplink capacity, such as connecting edge servers to a high-speed core switch or providing dedicated bandwidth for storage-heavy workloads. It excels in environments running Big Data analytics, AI/ML model training, or high-density virtualization, where a single high-speed pipe is sufficient for backend server connectivity without the complexity of multi-port management.

Does the P31246-B21 support advanced features like RDMA? +

Absolutely. This adapter supports Remote Direct Memory Access (RDMA) over Converged Ethernet (RoCE), which allows for memory-to-memory data transfers between servers without involving the operating system kernel or CPU. This feature significantly accelerates storage protocols and distributed database performance, providing the ultra-low latency required for real-time financial applications and high-performance cluster interconnects.

How should this PCIe network card be configured for high-availability environments? +

For high-availability clusters, we recommend teaming this adapter with redundant network paths at the switch level. While this card features a single port, you can implement link aggregation protocols within your operating system or hypervisor if multiple cards are installed. This approach ensures that your server maintains network connectivity even if an individual link or upstream switch port experiences an interruption.

What software drivers are necessary to manage the P31246-B21 adapter? +

To ensure peak performance and stability, you must install the latest HPE-certified drivers for your specific operating system, such as Windows Server, RHEL, or VMware ESXi. These drivers enable full functionality of the hardware offloads and management interfaces. Regularly updating your firmware via the HPE Service Pack for ProLiant (SPP) will keep the card synchronized with the latest security enhancements and compatibility patches.

Can I obtain a bulk quote for the HPE P31246-B21 from BuyRouterSwitch.com? +

Yes, we specialize in supporting large-scale enterprise deployments. If you are planning a data center refresh or require a significant quantity of these 100Gb NICs, please contact our sales team directly. We are prepared to provide competitive bulk pricing tailored to your project volume, helping you manage your hardware procurement costs effectively while securing the genuine HPE components your infrastructure requires.

Why should enterprise procurement teams choose BuyRouterSwitch.com for their network hardware? +

BuyRouterSwitch.com is a trusted source for authentic HPE enterprise networking gear, ensuring that every product you receive meets rigorous original equipment standards. Our focus is on providing seamless procurement experiences for IT managers, with streamlined order processing and expert guidance. By choosing us, you benefit from a dedicated focus on networking hardware and a commitment to providing high-quality solutions for your enterprise infrastructure needs.

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