HPE 874253-B21 1 Port Network Adapter Networking
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874253-B21 HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter. Refurbished

Availability: In Stock
Part Number#: 874253-B21
List Price was: $3215.38
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Short Description:
874253-B21 HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter.| Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
30 Days

Data Protection Considerations

Data protection considerations refer to the measures taken to ensure the confidentiality, integrity, and availability of data when using the HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter or any other network hardware. This is particularly important when dealing with sensitive data or critical business applications that require secure and reliable transmission of data over the network.

Here are some data protection considerations when using the HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter:

  • Encryption: It is important to use encryption when transmitting data over the network to prevent unauthorized access. The adapter may support various encryption protocols such as SSL, TLS, or IPSec to protect the data in transit.
  • Access control: Proper access controls should be implemented to restrict access to the network and the adapter itself. This can include user authentication, password policies, and other security measures to prevent unauthorized access.
  • Firewall: A firewall can be used to control traffic coming in and out of the network. This can help prevent unauthorized access and protect against malware and other security threats.
  • Backup and recovery: Regular backup of data is critical in case of data loss due to hardware or software failure. A robust backup and recovery strategy should be implemented to ensure that critical data can be restored in the event of a disaster.
  • Physical security: Physical access to the adapter should be restricted to prevent unauthorized access. This can include secure storage of the adapter and other hardware components, as well as proper disposal of any sensitive data.
  • Network segmentation: Network segmentation can be used to isolate critical data and applications from other parts of the network. This can help prevent unauthorized access and reduce the impact of security breaches.

By considering these data protection considerations when using the HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter or any other network hardware, organizations can ensure the confidentiality, integrity, and availability of their data, and protect against security threats and data loss.

Supported Operating Systems

Supported operating systems refer to the specific operating systems that a particular hardware device or software application has been designed and tested to work with. In the case of the HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter, there are certain operating systems that are officially supported by HPE for use with this adapter.

Supported operating systems for the HPE Ethernet 100 GB 1-Port 842QSFP28 Adapter may include various versions of popular operating systems such as Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and VMware ESXi. These operating systems have been tested and validated by HPE to work seamlessly with the adapter.

When an operating system is officially supported by the adapter manufacturer, it means that the necessary drivers, firmware, and other software components have been developed and tested to ensure compatibility and optimal performance. This can help to ensure that the adapter and operating system work together correctly and avoid any potential issues or incompatibilities.

It is important to note that just because an operating system is not officially supported does not necessarily mean that it will not work with the adapter. However, using an unsupported operating system may require additional configuration or troubleshooting to ensure proper functionality. It is also possible that using an unsupported operating system may result in reduced performance or stability issues.

Therefore, it is always recommended to check the official documentation and specifications provided by the adapter manufacturer to determine the list of officially supported operating systems before installing and using the adapter.

Adapter Architecture

An adapter is a hardware component that enables a computer system to connect to a network or other peripheral devices. It acts as an interface between the computer and the network, allowing data to be transmitted and received between them.

Adapter architecture refers to the design and functionality of the adapter itself. It includes the physical components of the adapter, such as the circuit boards, chips, and connectors, as well as the software components, such as drivers and firmware.

The architecture of an adapter can vary depending on the specific use case and the technology being employed. For example, an Ethernet adapter will have a different architecture than a Fibre Channel adapter. However, most adapters will include some common components such as:

  • Network Interface Controller (NIC): This is the main component of the adapter responsible for transmitting and receiving data over the network. It is typically a dedicated chip that manages the network communication.
  • Bus Interface: The bus interface connects the adapter to the computer system. It can be a PCI or PCIe slot, a USB port, or another type of interface.
  • Memory: Adapters may have onboard memory for caching data or storing configuration information.
  • Firmware: The firmware on the adapter manages the communication between the adapter and the computer system. It may include a boot loader, drivers, and other software components.
  • Connectors: Adapters have connectors for attaching to the network or other peripheral devices. These can include Ethernet ports, fiber optic connectors, or other types of connectors depending on the adapter's functionality.

General Information

  • Manufacturer: HPE
  • Part Number or SKU# 874253-B21
  • Type: Networking
  • Device Type : Network Adapter
  • Form Factor : Plug-in Card
  • Interface (bus) Type : Pci Express 3.0 X16


  • Ports : 100 Gigabit Qsfp28 X 1
  • Connectivity Technology : Wired
  • Data Link Protocol : 100 Gigabit Ethernet
  • Data Transfer Rate : 100 Gbps
  • Compliant Standards : Ieee 802.1q, Ieee 802.1p, Ieee 802.3ad (lacp), Ieee 802.1as, Ieee 802.1qbb, Ieee 802.1qaz, Ieee 802.3by, Ieee 802.3-2012

Processor / Memory

  • Processor : 1 X Mellanox Connectx-5

Expansion / Connectivity

  • Interfaces : 1 X 100gb Ethernet - Qsfp28
Product Condition:
Warranty provided by ALLHDD.COM:
30 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Please choose your location for calculate shipping cost.


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®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
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.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • 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
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.