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HPE BladeSystem c-Class 40G QSFP+ Active Optical Cables QuickSpecs

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Table of Contents

Table of Contents

    High‑performance Active Optical Cables designed to deliver reliable 40Gb connectivity within HPE BladeSystem c‑Class environments.

    These cables provide flexible, high‑speed QSFP+ to QSFP+ or QSFP+ to 4x10G SFP+ connectivity options optimized for BladeSystem interconnects.

    They support efficient signal transmission over longer distances, ensuring consistent bandwidth and simplified data center integration.

    Overview

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    Platform Information

    Models

    HPE BladeSystem c-Class 40G QSFP+ to QSFP+ 15m Active Optical Cable

    720211-B21

    HPE BladeSystem c-Class QSFP+ to 4x10G SFP+ 15m Active Optical Cable

    721076-B21

    Service and Support

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    Notes: To review the list of Lifecycle Services available for your product go to: https://www.hpe.com/services/lifecycle


    For a list of the most frequently purchased services using service credits, see the HPE Service Credits Menu

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    Defective Media Retention

    An option available with HPE Complete Care Service and HPE Tech Care Service and applies only to Disk or eligible SSD/Flash Drives replaced by HPE due to malfunction.


    Consult your HPE Sales Representative or Authorized Channel Partner of choice for any additional questions and services options.


    Parts and Materials

    HPE will provide HPE-supported replacement parts and materials necessary to maintain the covered hardware product in operating condition, including parts and materials for available and recommended engineering improvements.


    Parts and components that have reached their maximum supported lifetime and/or the maximum usage limitations as set forth in the manufacturer's operating manual, product quick-specs, or the technical product data sheet will not be provided, repaired, or replaced as part of these services.


    How to Purchase Services

    Services are sold by Hewlett Packard Enterprise and Hewlett Packard Enterprise Authorized Service Partners:

    • − Services for customers purchasing from HPE or an enterprise reseller are quoted using HPE order configuration tools.
    • − Customers purchasing from a commercial reseller can find services at https://ssc.hpe.com/portal/site/ssc/

    AI-Powered and Digitally Enabled Support Experience

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    • − Get faster time to market
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    To learn more about HPE Services, please contact your Hewlett Packard Enterprise sales representative or Hewlett Packard Enterprise Authorized Channel Partner. Contact information for a representative in your area can be found at "Contact HPE" https://www.hpe.com/us/en/contact-hpe.html


    For more information

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    Technical Specifications

    HPE BladeSystem c-Class 40G QSFP+ to QSFP+ 7m Active Optical Cable

    (720205-B21)


    Connectivity

    Length

    22.97 ft. (7 m)

    Physical characteristics

    Weight

    0.33 lb. (0.15 kg), Fully loaded the cable with a QSFP+ transceiver at each end of the cable

    Environment

    Operating temperature

    32°F to 158°F (0°C to 70°C)

    Operating relative humidity

    0% to 85%, noncondensing

    Non-operating/Storage temperature

    −40°F to 185°F (−40°C to 85°C)

    Non-operating/Storage relative humidity

    0% to 85%, noncondensing

    Altitude

    Up to 10,000 ft. (3 km)

    Electrical characteristics

    Notes

    1.5 watts maximum per transceiver end

    Notes

    Electrical Properties

    Cable Characteristic Impedance: Non-conductive

    Crosstalk between pairs: 26 dB max

    Time delay: 1.57 nsec/ft o BER: 10–15 max

    Physical Properties

    Cable Diameter: 3 mm

    Minimum Cable Bend Radius: 25 mm

    HPE BladeSystem c-Class 40G QSFP+ to QSFP+ 15m Active Optical Cable

    (720211-B21)

    Connectivity

    Length

    49.21 ft. (15 m)

    Physical characteristics

    Weight

    0.57 lb., Fully loaded the cable with a QSFP+ transceiver at each end of the cable

    Environment

    Operating temperature

    32°F to 158°F (0°C to 70°C)

    Operating relative humidity

    0% to 85%, noncondensing

    Non-operating/Storage temperature

    −40°F to 185°F (−40°C to 85°C)

    Non-operating/Storage relative humidity

    0% to 85%, noncondensing

    Altitude

    Up to 10,000 ft. (3 km)

    Electrical characteristics

    Notes

    1.5 watts maximum per transceiver end

    Notes

    Electrical Properties

    Cable Characteristic Impedance: Non-conductive

    Crosstalk between pairs: 26 dB max

    Time delay: 1.57 nsec/ft o BER: 10–15 max

    Physical Properties

    Cable Diameter: 3 mm

    Minimum Cable Bend Radius: 25 mm

    HPE BladeSystem c-Class QSFP+ to 4x10G SFP+ 7m Active Optical Cable

    (721070-B21)

    Connectivity

    Length

    22.97 ft. (7 m)

    Physical characteristics


    Weight

    0.56 lb. (0.25 kg), Fully loaded the cable with a QSFP+ transceiver at one end and 4 SFP+ transceivers at the other end of the cable

    Environment

    Operating temperature

    32°F to 158°F (0°C to 70°C)

    Operating relative humidity

    5% to 85%, noncondensing

    Non-operating/Storage temperature

    −40°F to 185°F (−40°C to 85°C)

    Non-operating/Storage relative humidity

    5% to 85%, noncondensing

    Altitude

    Up to 10,000 ft. (3 km)

    Electrical characteristics

    Notes

    1.5 Watts maximum QSFP+ cable end

    0.35 Watts maximum SFP+ Cable end (each)

    Notes

    Electrical Properties

    Cable Characteristic Impedance: Non-conductive

    Crosstalk between pairs: 26 dB max

    Time delay: 1.475 nsec/ft

    BER: 10E-15 max

    Physical Properties

    QSFP+ Cable Diameter: 3.4 mm

    SFP+ Cable Diameter: 3 mm

    QSFP+ Minimum Cable Bend Radius: 25 mm

    SFP+ Minimum Cable Bend Radius: 30 mm

    HPE BladeSystem c-Class QSFP+ to 4x10G SFP+ 15m Active Optical Cable

    (721076-B21)

    Connectivity

    Length

    49.21 ft. (15 m)

    Physical characteristics

    Weight

    0.74 lb. (0.34 kg), Fully loaded the cable with a QSFP+ transceiver at one end and 4 SFP+ transceivers at the other end of the cable

    Environment

    Operating temperature

    32°F to 158°F (0°C to 70°C)

    Operating relative humidity

    5% to 85%, noncondensing

    Non-operating/Storage temperature

    −40°F to 185°F (−40°C to 85°C)

    Non-operating/Storage relative humidity

    5% to 85%, noncondensing

    Altitude

    Up to 10,000 ft. (3 km)

    Electrical characteristics

    Notes

    1.5 Watts maximum QSFP+ cable end

    0.35 Watts maximum SFP+ Cable end (each)

    Notes

    Electrical Properties

    Cable Characteristic Impedance: Non-conductive

    Crosstalk between pairs: 26dB max

    Time delay: 1.475 nsec/ft

    BER: 10E-15 max

    Physical Properties

    QSFP+ Cable Diameter: 3.4 mm

    SFP+ Cable Diameter: 3 mm

    QSFP+ Minimum Cable Bend Radius: 25 mm

    SFP+ Minimum Cable Bend Radius: 30 mm

    Operating System and Virtualization Support

    The Operating Systems supported by this adapter are based on the server OS support. Please refer to the OS Support Matrix at https://www.hpe.com/us/en/servers/server-operating-systems.html.

    Environment-friendly Products and Approach - End-of-life Management and Recycling

    Hewlett Packard Enterprise offers end-of-life product return, trade-in, and recycling programs, in many geographic areas, for our products. Products returned to Hewlett Packard Enterprise will be recycled, recovered or disposed of in a responsible manner.

    The EU WEEE Directive (2012/19/EU) requires manufacturers to provide treatment information for each product type for use by treatment facilities. This information (product disassembly instructions) is posted on the Hewlett Packard Enterprise web site. These instructions may be used by recyclers and other WEEE treatment facilities as well as Hewlett Packard Enterprise OEM customers who integrate and re-sell Hewlett Packard Enterprise equipment.

    Summary of Changes

    Date

    Version History

    Action

    Description of Change

    16-Feb-2026

    Changed

    New branding applied to document.

    04-Dec-2023

    Changed

    Service and Support section was updated.

    15-Nov-2021

    Changed

    Service and Support section was updated.

    26-Nov-2018

    Changed

    Technical Specifications were updated

    05-Feb-2018

    Changed

    Models section was updated.

    26-Oct-2016

    Changed

    Rebranding edition.

    09-Feb-2015

    Added

    SKUs added on models section: 721070-B21, 721073-B21, 721076-B21

    Changed

    QuickSpecs name changed from "HPE BladeSystem c-Class 40G QSFP+ to QSFP+ Active Optical Cable" to "HPE BladeSystem c-Class 40G QSFP+ Active Optical Cables" Overview, Technical Specification sections were updated

    10-Jun-2014

    New

    Initial version

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