HP 539857-B21 2 Port Networking Network Adapter
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539857-B21 HP Nc542m Dual Port Flex-10 10gbe Multifunction Bulk

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Part Number#: 539857-B21
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Short Description:
539857-B21 HP Nc542m Dual Port Flex-10 10gbe Multifunction Bl-C Adapter Network Adapter. New Bulk Pack.

Interface Types of This Product: Network Adapter 2 Port

Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
30 Days
We are providing specifications below to explain why you should consider purchasing the HP 2 Port Network Adapter Networking, including a general overview, performance specifications, relevant images, media files, and technical information about the 539857-B21 compatibility.

Network Virtualization and Cloud Integration

Network virtualization is the process of abstracting network resources from the underlying physical hardware and creating virtual networks that can be dynamically provisioned and managed. It enables network administrators to create multiple virtual networks that can operate independently from one another, each with its own set of policies and security controls. This can help to improve network agility, flexibility, and scalability, while reducing costs and complexity.

Cloud integration refers to the process of integrating cloud-based resources and services with on-premises IT infrastructure to create a hybrid cloud environment. This can include integrating public cloud services such as Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform with private cloud infrastructure, or integrating cloud-based applications with on-premises data centers.

Here are some possible subheadings related to network virtualization and cloud integration:

  • Introduction to Network Virtualization and Cloud Integration
  • Benefits of Network Virtualization and Cloud Integration
  • Key Concepts and Technologies for Network Virtualization and Cloud Integration
  • Network Virtualization Platforms and Solutions
  • Cloud Integration Strategies and Best Practices
  • Cloud Management and Orchestration
  • Network Security and Compliance in a Virtualized and Cloud Environment
  • Network Performance Optimization in a Virtualized and Cloud Environment
  • Network Monitoring and Analytics for Virtualized and Cloud Environments
  • Network Virtualization and Cloud Integration with HP Nc542m Dual Port Flex-10 10gbe Multifunction Bl-C Adapter Network Adapter
  • Future Trends and Developments in Network Virtualization and Cloud Integration
  • Conclusion and Final Thoughts on Network Virtualization and Cloud Integration.

Power and Cooling Efficiency

Power and cooling efficiency is a critical factor in modern data centers, where energy costs can account for a significant portion of operating expenses. To reduce costs and minimize environmental impact, it is important to design data center infrastructure that is both energy-efficient and reliable.

Here are some possible subheadings related to power and cooling efficiency:

  • Introduction to Power and Cooling Efficiency in Data Centers
  • Benefits of Power and Cooling Efficiency
  • Key Concepts and Technologies for Power and Cooling Efficiency
  • Energy-efficient Hardware and Infrastructure Design
  • Power Management and Optimization Strategies
  • Cooling and Airflow Management Techniques
  • Thermal Monitoring and Analytics
  • Power and Cooling Efficiency Best Practices
  • Power and Cooling Efficiency with HP Nc542m Dual Port Flex-10 10gbe Multifunction Bl-C Adapter Network Adapter
  • Energy-efficient Data Center Design and Construction
  • Future Trends and Developments in Power and Cooling Efficiency
  • Conclusion and Final Thoughts on Power and Cooling Efficiency.

Empowering Network Administrators

Empowering network administrators is a critical component of modern IT infrastructure management. Network administrators need to have the tools, technologies, and resources to manage complex networks effectively and efficiently. This requires a comprehensive understanding of network design, security, performance, and other key factors, as well as access to advanced management tools and technologies.

Here are some possible subheadings related to empowering network administrators:

  • Introduction to Empowering Network Administrators
  • Key Skills and Knowledge for Network Administrators
  • Network Design and Architecture Best Practices
  • Network Security and Compliance Management
  • Network Performance Optimization Strategies
  • Network Monitoring and Analytics Tools
  • Network Configuration and Change Management Best Practices
  • Network Automation and Orchestration Techniques
  • Advanced Network Management Tools and Technologies
  • Empowering Network Administrators with HP Nc542m Dual Port Flex-10 10gbe Multifunction Bl-C Adapter Network Adapter
  • Training and Professional Development for Network Administrators
  • Future Trends and Developments in Network Administration
  • Conclusion and Final Thoughts on Empowering Network Administrators.

Empowering network administrators is critical to effective and efficient management of complex IT infrastructure. The subheadings above provide a framework for understanding the key skills, best practices, and technologies for empowering network administrators, with a focus on the HP Nc542m Dual Port Flex-10 10gbe Multifunction Bl-C Adapter Network Adapter and other advanced network technologies.


  • Manufacturer Name: HP
  • Manufacturer Part Number: 539857-B21
  • Type: Networking
  • Sub-Type: Network Adapter 2 Ports
  • Device Type : Network Adapter
  • Interface (bus) Type : Pci Express 2.0 X8
  • Ports Qty : 2 Ports
  • Cabling Type : Ethernet 10gbase-kx4
  • Data Link Protocol : 10 Gigabit Lan
  • Data Transfer Rate : 10 GBPS

Compliant Standards

  • IEEE 802.3u, IEEE 802.3z, IEEE 802.1q, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (lacp), IEEE 802.3ae, IEEE 802.3ap

System Requirements

  • Microsoft Windows Server 2003 Enterprise Edition, Microsoft Windows Server 2003 Web Edition, Microsoft Windows Server 2003 Standard Edition, Microsoft Windows Server 2003, Novell Netware 6.5, Microsoft Windows Small Business Server 2003, Sunsoft Solaris 10, Microsoft Windows Server 2003 Standard X64 Edition, Microsoft Windows Server 2003 Enterprise X64 Edition, Suse Linux Enterprise Server 9 For X86/amd64, Suse Linux Enterprise Server 10 For X86, Suse Linux Enterprise Server 9 For X86, Sunsoft Solaris X64 10, Suse Linux Enterprise Server 10 For X86/amd64, Red Hat Enterprise Linux 5 For Intel X86 / Amd64 / Em64t, Microsoft Windows Server 2003 R2, Red Hat Enterprise Linux 5 For X86, Microsoft Windows Server 2008, Microsoft Windows Server 2008 For Itanium, Microsoft Windows Server 2008 X64 Edition

Designed For

  • Proliant Bl280c G6, Bl2x220c G6, Bl2x220c G6 Server A, Bl2x220c G6 Server B, Bl460c G6, Bl460c G7, Bl465c G6, Bl465c G7, Bl490c G6, Bl490c G7, Bl495c G6, Bl620c G7, Bl680c G7, Bl685c G6, Bl685c G7, Storageworks X3800sb G2, Storageworks Network Storage Blade X1800sb G2

About New Bulk Pack Products

New Bulk Pack products come with clamshell boxes and do not have any manufacturer warranty. Many times manufacturers disassemble whole units to use parts or pulled from a new system. Typically, this product doesn't come with software or instructions unless indicated and no Manufacturer’s genuine warranty. You can take note these are not brand new products.

Network Adapters

A network adapter is also called a network interface card is a plug-in card that serves to allow computers to both transmit and receive data on a local network. It is a component of a computer's internal hardware that facilitates communication over a network.

In a more current context, network adapters will refer to an Ethernet adapter where the Ethernet circuitry is built into motherboards of the latest desktops and laptop computers. Other times, a network adapter may also refer to a wireless (Wi-Fi) adapter.

In all instances, the adapter allows a computer to connect with another computer, a server, or other networking devices through a LAN connection. The use of a network adapter is not limited to wired connections as it is used for wireless networks. The adapters for wired networks come with a RJ-45 port that may use either the twisted or untwisted pair cables for network connectivity. For the wireless adapters, the network connection is facilitated through a built-in antenna or an externally connected antenna. Both the wired and wireless network adapters support the popular LAN protocols including TCP/IP. We have 1-port, 2-port, 4-port, 6-port, 8-port, and 16-port options that support speeds of 10, 25, 40, or even 100 Gigabits.

The plug-in network interface cards (NICs) are normally used in high-performance machines especially if a faster Ethernet standard is relatively new and available but is yet to become mainstream. In fact, the major difference between network adapters lies in the network protocol it supports.

We have the different types of network adapters necessary for building computer-to-computer networks that don't have a switch or hub. All the network adapters are fairly inexpensive and readily adaptable to different applications within a network. Some of the common types available are:

Network adapters common types

  • Desktop Network Interface Card: This adapter is usually connected to a PCI or PCIe slot, whichever is available on the motherboard of your desktop computer. You will need to open your computer's case and it, therefore, presents the most difficult installation method. The PCIe slot is generally found in new computers.
  • PC Card or PCMCIA Card: PCMCIA is the abbreviation for Personal Computer Memory Card International Association. The name has undergone changes over time to be referred to as a PC Card or ExpressCard. For dimensions, the PC card is almost similar in size to a credit card but is significantly thicker. The PC card is connected to a PC or PCMCIA card slot in your desktop computer or laptop computer.
  • USB adapter: This network adapter is typically a small device, similar to a thumb drive, with a USB interface. Installation is easy and straightforward since it is plugged into the USB port of your desktop or laptop computer or other network devices that have a USB port.
  • Wireless game adapters also referred to as media adapters, are connected to the older game consoles and home entertainment devices so as to act as a bridge to Wi-Fi capability. They help expand functionality on these entertainment devices through connections to the internet.

Here, you can check more available conditions of your desired product 539857-B21 at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
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Available throughout all 50 states

FedEx Standard Overnight®
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Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
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  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
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