Which Ethernet standard does this module support?

This module is categorized as a 40GBASE-LR4 single-mode 10 km LC transceiver. That classification indicates that it is designed for 40GBASE-LR4, a 40 Gb Ethernet standard that operates over single-mode fiber at long reach distances within a 10 km class using an LC connector interface.

What fiber type is the HPE 720190-B21 intended for?

The HPE 720190-B21 is listed under the category 40GBASE-LR4 single-mode 10 km LC, specifying that it is intended for single-mode fiber links. This single-mode classification is important for planning fiber infrastructure and distances, particularly for long-reach 40 Gb connections.

What is the maximum distance class for this transceiver?

: "The transceiver is specified in the category 40GBASE-LR4 single-mode 10 km LC, indicating a distance class of up to 10 km over single-mode fiber. This makes it suitable for extended links such as inter-building or campus connections where 40 Gb connectivity is required.

In which HPE environment is this transceiver typically used?

The model name identifies it as an HPE BladeSystem c-Class 40Gb QSFP+ LC LR4 Transceiver. This association indicates that it is intended for use within HPE BladeSystem c-Class environments where QSFP+ ports are available for 40 Gb optical connectivity using LR4 single-mode 10 km LC optics.

720190-B21 - HPE 720190-B21 BladeSystem 40Gb QSFP+ LC LR4 Transceiver

Name: HPE 720190-B21 BladeSystem 40Gb QSFP+ LC LR4 Transceiver
Brand: HPE
SKU: 720190-B21
Price: 425 USD
Availability: InStock

720190-B21 - HPE 720190-B21 BladeSystem 40Gb QSFP+ LC LR4 Transceiver | US IT Hardware

Product overview

The HPE BladeSystem c-Class 40Gb QSFP+ LC LR4 Transceiver, SKU 720190-B21, is a QSFP+ optical module designed for 40GBASE-LR4 single-mode fiber links up to 10 km. As part of the HPE BladeSystem c-Class portfolio, it delivers 40 Gb connectivity using an LC interface, aligned with LR4 long reach optical specifications. This transceiver is categorized as a 40GBASE-LR4 single-mode 10 km LC module, supporting data center and aggregation deployments that standardize on QSFP+ form factor for 40 Gb networking. With its QSFP+ design and LC connector, it is suitable for environments that require consistent 40 Gb links over single-mode fiber at extended distances. The module fits organizations seeking standardized 40GBASE-LR4 optics within BladeSystem-based architectures, helping unify optical interfaces and simplify transceiver selection across compatible infrastructure.

HPE BladeSystem c-Class 40Gb QSFP+ LC LR4 design
40GBASE-LR4 single-mode 10 km classification
QSFP+ form factor for 40 Gb Ethernet ports
Single-mode fiber support for long-reach links
LC optical interface for 40GBASE-LR4 links
Optimized for BladeSystem c-Class deployments

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Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Product Type
Manufacturer part #	720190-B21
Brand	HPE
Condition	New
Model	HPE BladeSystem c-Class 40Gb QSFP+ LC LR4 Transceiver
Fiber Mode	Single-mode fiber (SMF)
Fiber Type	Single-Mode Fiber
Lane Count	4 optical lanes
Wavelength	1310 nm
Application	40GBASE-LR4
Form Factor	QSFP+
Product Line	HPE BladeSystem c-Class

Compatible systems

Optical 40G QSFP+ LR4 SMF transceiver used in HPE BladeSystem c-Class environments.

HPE BladeSystem
Model: c-Class
Listed as 40GBase-LR4 QSFP+ LC for BladeSystem c-Class and used in Synergy cabling guide referencing 720190-B21.

Best for

BladeSystem 40Gb aggregation
Suitable for HPE BladeSystem c-Class environments that require 40 Gb connectivity using QSFP+ LC LR4 transceivers aligned with 40GBASE-LR4 standards.
10 km single-mode fiber links
Intended for single-mode fiber deployments where 40GBASE-LR4 links are needed for distances up to 10 km using an LC interface.
Standardized 40GBASE-LR4 optics
Useful in infrastructures that standardize on 40GBASE-LR4 single-mode 10 km LC transceivers for consistent 40 Gb optical connectivity.

Frequently asked questions

What type of transceiver is the HPE 720190-B21?

Details

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Hot Swappable	Yes, hot-pluggable QSFP+ form factor

Maximum Distance	10 km

Transceiver Type	QSFP+

Intended Use Case	40 GbE data center and campus backbone links up to 10 km

Optical Modulation	4-lambda WDM over single-mode fiber

Aggregate Line Rate	41.2 Gb/s aggregate (4 x 10.3 Gb/s)

Supported Link Type	40 Gigabit Ethernet

Compatible Platforms	HPE BladeSystem c-Class; HPE Virtual Connect

Supported Cabling Type	Single-mode duplex LC fiber patch cord

Transceiver Technology	40GBASE-LR4

Alternative Part Number	JG681A

Per Lane Signaling Rate	10.3 Gb/s per lane

Transmission Distance on SMF	Up to 10 km over single-mode fiber

Digital Diagnostic Monitoring	DOM supported

Data Transfer Rate	40 Gbps

Supply Voltage	3.3 V DC nominal
Typical Power Consumption	Less than 3.5 W

Networking Ports & Interfaces

Ports	1 x QSFP+ 40Gb port
Connector Type	LC duplex
Port Interface	LC duplex
Protocol Support	40GBASE-LR4 Ethernet over SMF
Physical Interface	QSFP+ edge connector to host system
Optical Interface Standard	IEEE 802.3ba 40GBASE-LR4
Optical Connector Interface	LC duplex receptacle
Compatible Network Platforms	HPE BladeSystem c-Class and HPE Virtual Connect modules
Management Interface Features	Digital diagnostics via QSFP+ management interface (DOM)

HPE 720190-B21 BladeSystem 40Gb QSFP+ LC LR4 Transceiver