665240-B21 HPE Ethernet 1Gb 4-port 366FLR Internal 1000 Mbit/s

Name: 665240-B21 HPE Ethernet 1Gb 4-port 366FLR Internal 1000 Mbit/s
Brand: HPE
SKU: 665240-B21
Price: 71.04 USD
Availability: InStock
Rating: 5 (10 reviews)

Mfr. Part #: 665240-B21

Brand: Hpe

Condition: New

Skip to the end of the images gallery

Skip to the beginning of the images gallery

-13%

Was: $81.70

You Save: $10.66 13% OFF

$71.04 In Stock - Ships Worldwide Order by 2:00 PM ET for Overnight Shipping
Warranty: 90-day return/replacement

Click here to read our Return Policy for returns/replacements.
Authenticity: Original Genuine OEM

Ethernet 1Gb 4-port 366FLR

Quantity:

Extra 5% Off at Checkout

Genuine Guarantee
Volume Pricing Available

Request a Custom Quote

Free ground shipping within the

United States

Government, Federal & Education Procurement

We support quotes, POs, stock docs, and compliance invoicing.

Email: support@buyrouterswitch.com SAM.gov Registered Vendor CAGE Code : 23P86

overview

specifications

resources

faqs

reviews

overview

665240-B21 Overview

HPE 665240-B21 Ethernet 1gb 4-port 366flr Adapter.

Ethernet 1Gb 4-port 366FLR Adapter

Wired

PCI Express 2.1 Ethernet

Gigabit Ethernet 1000 Mbit/s

Internal Component for: Server

Summary Description

HPE Ethernet 1Gb 4-port 366FLR. Internal. Connectivity technology: Wired, Host interface: PCI Express, Interface: Ethernet. Maximum data transfer rate: 1000 Mbit/s

Need help with 665240-B21?

Get pricing, availability, lead time, and compatible options from our team. Chat with us live or email support@buyrouterswitch.com

specifications

Specifications

Overview

Condition	New
Brand	HPE
Stock	In Stock

Ports & interfaces

Connectivity technology	Wired
Host interface	PCI Express
Interface	Ethernet
Ethernet LAN (RJ-45) ports	4
PCI version	2.1

Network

Maximum data transfer rate	1000 Mbit/s
Networking standards	IEEE 1588, IEEE 802.1Q, IEEE 802.1as, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3az, IEEE 802.3u, IEEE 802.3x
Ethernet LAN	Yes
Ethernet interface type	Gigabit Ethernet

Design

Component for	Server
Internal	Yes
Compatible products	ProLiant DL20 Gen9 ProLiant DL360 Gen9 ProLiant DL380 Gen9 Apollo 4200 Gen9 ProLiant DL120 Gen10 ProLiant DL160 Gen10 ProLiant DL180 Gen10 ProLiant DL325 Gen10 ProLiant DL360 Gen10 ProLiant DL380 Gen10 ProLiant DL385 Gen10 ProLiant DL560 Gen10 ProLiant DL580 Gen10 Apollo 2000 XL170r Gen10 Apollo 2000 XL190r Gen10 Apollo 4500 XL450 Gen10

Power

Power consumption (typical)	5.5 W

Operational conditions

Operating temperature (T-T)	0 - 55 °C
Storage temperature (T-T)	-65 - 85 °C

Weight & dimensions

Width	209.6 mm
Depth	248.4 mm
Height	63.5 mm
Weight	450 g

Logistics data

Harmonized System (HS) code	85176990

Other features

Built-in processor	Yes
Processor model	Yes

resources

Resources

Documents

665240-B21-brochure-datasheet

faqs

Frequently Asked Questions

What is the primary function of the HPE 665240-B21 366FLR adapter? +

The HPE Ethernet 1Gb 4-port 366FLR is a FlexibleLOM (FLR) adapter designed for HPE ProLiant Gen8 servers. It provides high-performance Gigabit Ethernet connectivity, effectively increasing your server's network bandwidth by utilizing a dedicated mezzanine slot. This setup preserves valuable PCI Express slots for other expansion cards while providing reliable, enterprise-grade network throughput for virtualization and cloud-based applications.

Which server series are compatible with the 665240-B21 FLR card? +

This adapter is specifically engineered for HPE ProLiant Gen8 rack and blade servers that feature a dedicated FlexibleLOM slot. Because the 366FLR uses the specialized FLR form factor, it is not compatible with standard PCIe slots found in generic workstations or servers without the specific mezzanine interface. Always verify your server's QuickSpecs to confirm your motherboard supports the FlexibleLOM architecture.

Does the 366FLR support advanced virtualization features like SR-IOV? +

Yes, this adapter supports advanced networking features including Single Root I/O Virtualization (SR-IOV). This technology allows the adapter to share its physical ports among multiple virtual machines, significantly reducing CPU overhead and improving overall network performance in highly virtualized environments. It also supports features like TCP offloading and checksum offloading to further optimize data processing efficiency.

How do I manage the HPE 665240-B21 within my existing server infrastructure? +

Management is seamlessly integrated into the standard HPE server ecosystem. You can configure and monitor this adapter using HPE’s iLO management interface or via standard OS-level drivers. It supports common network management protocols, allowing IT administrators to manage traffic flow, link status, and VLAN tagging through existing network management tools without requiring proprietary software suites for basic operation.

What are the performance benefits of using a 4-port adapter compared to dual-port options? +

The 4-port configuration provides increased port density, which is critical for workloads requiring network segmentation, such as separating management, storage, vMotion, and public traffic. By consolidating these functions onto a single FlexibleLOM card, you maximize server utility and reduce the need for additional network adapters, keeping your server’s internal airflow clear and reducing power consumption compared to using multiple separate cards.

Is this adapter suitable for high-traffic data center deployments? +

Absolutely. The 366FLR is built for the demanding conditions of enterprise data centers. Its architecture is optimized for consistent throughput and low latency, making it ideal for stable connectivity in busy server environments. The four Gigabit ports provide redundant paths for mission-critical traffic, ensuring that your network infrastructure maintains high availability even under sustained heavy loads or during specific link failures.

Does the 665240-B21 require specific drivers for Windows or Linux? +

Yes, proper operation requires the installation of the appropriate HPE-certified drivers for your specific operating system version. These drivers ensure full compatibility with the card's offloading engines and virtualization features. You should download the latest Service Pack for ProLiant (SPP) or visit the HPE support portal to obtain the most recent drivers to ensure optimal stability and performance for your environment.

What is the physical installation process for a FlexibleLOM adapter? +

Installation is designed to be straightforward and non-invasive. Since it is a FlexibleLOM card, it installs into a dedicated slot on the server motherboard rather than a standard PCIe riser. You simply slide the card into the designated FLR mezzanine connector and secure it with the provided retention screws. This modular approach allows for quick upgrades without the need to tear down the server's internal components.

How can I obtain a bulk quote for the HPE 366FLR through BuyRouterSwitch.com? +

For organizations requiring multiple units for large-scale data center rollouts, BuyRouterSwitch.com offers streamlined procurement processes. You can easily request a competitive bulk quote by contacting our dedicated sales team directly through our website. We specialize in volume orders and can assist you with tailored pricing to ensure your project stays within budget while fulfilling your enterprise hardware requirements efficiently.

Why should I choose BuyRouterSwitch.com for my HPE network hardware needs? +

BuyRouterSwitch.com is a trusted partner for enterprise IT professionals looking for authentic hardware and reliable procurement. We pride ourselves on our deep technical expertise and our ability to source hard-to-find networking components. When you order from us, you receive professional service backed by a focus on secure, accurate, and timely fulfillment, making us the preferred choice for purchasing critical server accessories like the HPE 366FLR.

Reviews