HP 581201-B21 Server Adapter Networking NIC
If you need a large quantity of 581201-B21 product - call us at +1 (718) 766 5269 or request a quote at live chat and our sales manager will contact you shortly.
Looking for assistance? Connect with one of our experts
We are accepting NET 30 days purchase orders & offer payment terms of up to 12 months. Get a decision in seconds, without affecting your credit.
6 of 18

Why 581201-B21 HP Dual Port 10GBe Server Bulk is the best?

Availability: In Stock
Part Number#: 581201-B21
List Price was: $101.64
Your Price:
You Save: $35.64 (54% off)
3% Discount on Checkout

Short Description:
581201-B21 HP Dual Port 10GBe Server Adapter Network Adapter. New Bulk Pack.

Interface Types of This Product: NIC Server Adapter

Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
30 Days
We are giving specifications below, why one should consider procuring HP Server Adapter NIC Networking features, a general overview, description, performance specification, relevant images, a competitive price infographic, and technical information about the 581201-B21 model with compatibility.

Installation and Configuration

Installation and configuration of the HP Dual Port 10GBe Server Adapter can be a complex process, but with the right steps and guidelines, it can be completed successfully. In this section, we will discuss the steps involved in the installation and configuration of the HP Dual Port 10GBe Server Adapter.

Before we proceed, it is important to note that the steps for installation and configuration may vary depending on the server and operating system you are using. Therefore, it is recommended to consult the product documentation and support resources for your specific system.

  • Check System Compatibility: The first step is to check if your server and operating system are compatible with the HP Dual Port 10GBe Server Adapter. Refer to the product documentation or consult with HP support to ensure that your system meets the minimum requirements for the adapter.
  • Prepare the Server: Before installing the adapter, ensure that the server is powered off and unplugged from the power source. Remove the server cover and locate an available PCIe slot for the adapter. Verify that the slot is compatible with the adapter and is not being used by any other device.
  • Install the Adapter: Gently insert the adapter into the PCIe slot, making sure it is securely seated. Tighten the retention screw to secure the adapter in place.
  • Connect the Network Cables: Connect the network cables to the adapter ports. The HP Dual Port 10GBe Server Adapter has two ports, labeled Port 1 and Port 2. Connect the cables to the appropriate ports based on your network configuration.
  • Boot the Server and Install Drivers: Once the adapter is physically installed, power on the server and boot into the operating system. Download and install the appropriate drivers for your operating system from the HP website or installation CD that came with the adapter.
  • Configure the Adapter: After the drivers are installed, open the network adapter settings in your operating system. Configure the adapter with the appropriate network settings, such as IP address, subnet mask, gateway, and DNS server.
  • Verify the Adapter Settings: Verify that the adapter is working properly by checking the network connectivity and verifying the adapter settings. You can use network diagnostic tools or ping commands to test the connection.

Performance and Reliability

The HP Dual Port 10GBe Server Adapter is designed to provide high performance and reliability for demanding server applications. Here are some key factors that contribute to the adapter's performance and reliability:

  • Bandwidth: The HP Dual Port 10GBe Server Adapter provides 20 Gbps of total bandwidth, which allows for faster data transfer rates and reduces network congestion. This is especially important for high-traffic server applications that require fast and reliable data transfer.
  • Low Latency: The adapter has low latency, which means that data packets are delivered quickly and with minimal delay. This is important for applications that require real-time data transfer, such as video streaming, online gaming, and financial transactions.
  • Scalability: The HP Dual Port 10GBe Server Adapter is designed to be scalable, which means it can easily handle increased network traffic and bandwidth requirements. This is important for applications that are expected to grow and evolve over time.
  • Quality of Service (QoS): The adapter has built-in Quality of Service (QoS) features that allow administrators to prioritize network traffic based on application requirements. This ensures that critical applications receive the necessary network resources and bandwidth.
  • Reliability: The HP Dual Port 10GBe Server Adapter is built with high-quality components and undergoes rigorous testing to ensure reliability and durability. This means that it is less likely to fail or cause downtime, which is critical for mission-critical applications.


The HP Dual Port 10GBe Server Adapter is compatible with a wide range of servers and operating systems. Here are some key points to keep in mind regarding the adapter's compatibility:

  • Server Compatibility: The HP Dual Port 10GBe Server Adapter is compatible with HP ProLiant Gen8 and Gen9 servers, as well as selected third-party servers. It is important to check the product documentation to ensure compatibility with your specific server model.
  • Operating System Compatibility: The adapter is compatible with a wide range of operating systems, including Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and VMware ESXi. It is important to check the product documentation to ensure compatibility with your specific operating system version.
  • Driver Support: The adapter requires specific drivers to function properly, and it is important to ensure that the appropriate driver version is installed for your operating system. HP provides drivers for the adapter on their website, as well as on the installation CD that comes with the adapter.
  • Network Compatibility: The HP Dual Port 10GBe Server Adapter is compatible with a wide range of network topologies, including Ethernet, Fibre Channel over Ethernet (FCoE), and iSCSI. It is important to ensure that your network infrastructure is compatible with the adapter and that you have the necessary network cables and switches.
  • Firmware Compatibility: The adapter may require firmware updates to ensure compatibility with the latest servers, operating systems, and network technologies. It is important to check for firmware updates on HP's website and to follow the instructions carefully when updating the firmware.

General Information

  • Device Type : Network Adapter - 2 Ports
  • Interface (Bus) Type : Pci Express 2.0 X8
  • Pci Specification Revision : Pcie 2.0


  • Connectivity Technology : Wired
  • Data Link Protocol : 10 Gigabit Ethernet


  • Ipv6 Support, Tcp/Ip Offloading, Quality Of Service (Qos), Jumbo Frames Support

Compliant Standards

  • IEEE 802.1q, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (Lacp), IEEE 802.3ae, IEEE 802.3ap, IEEE 802.3az

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.

Adding gigabyte network connectivity is one of the best decisions users can make in the modern world. This is what the NIC (Network Interface Card) offers. This highly advanced networking device offers users a dedicated computer network connection.

The network interface card's ability to support wired and wireless network communications makes it one of the best choices. Individual users and IT professionals will find them very useful.

NIC enables adequate communication between computers. The computers may either be connected over a Local Area Network or over larger-scale networks via an IP. Regardless of the connection type, the network interface card offered at AllHDD works at optimal rates.

When users choose network interface card options here, they get the most reliable hardware circuitry. That is, there's a synergy between a data link and a physical layer in one device. The circuitry enables the physical layer to process data so that the processes involving the data link layer can run effectively on it.

Gone are the days when network controllers were the real deals. Today, a network interface card can serve as an expansion module in computer systems or routers. The specifications of the NIC users will get correspond with the standard of various network options.

Network Interface Card Options

Internal Network Interface Cards

Users will find NIC (Network Interface Cards) that users can insert directly onto the computer's motherboard. For these options to offer network access, there's the need for network cables. There are NIC options that use connections like Peripheral Component Interconnect (PCI). Others connect with Industry Standard Architecture (ISA).

External Network Interface Cards

Laptops and desktops which do not come with an internal network interface card use the external option. There are two options for the external NIC. The first is the wireless network cards, which will be attached directly to the motherboard.

Unlike the internal option, there will be no need for networking cables in this case. These options are the best when users need to travel or access wireless signals.

On the other hand, there are several USB options ranging from 1 port to 4 port NIC. They are compact, and they add a network connection to a USB-enabled computer system. Many of these NIC options work with 10-100-1000 Mbps networks.

They are also ideal replacements for local area network (LAN) adapters and similar laptop accessories. Users will find USB network interface cards that support features such as VLAN tagging, Jumbo Frames, and Wake on LAN (WOL). They are the most reliable Gigabit network for versatile home and business use.

Key Features

  • Fast and Reliable Performance. The network interface cards have impressive speed rating with options up to 1000 Mbps. They enable the connection of multiple computers without the fear of failure.
  • Updated and Incorruptible Driver. The driver that passes data between the NIC and the computer system ensures optimal performance.
  • Connectivity LED. These NIC (Network Interface Cards) come with integrated LED indicators to notify users when there is a network connection and transfer of data.

Here, you can check more available conditions of your desired product 581201-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.


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.