• Cisco Compatible QSFP-40G-CSR4 40G Multi-Mode Transceiver Module
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Blue Cable Co

QSFP-40G-CSR4-BCC | Cisco Compatible 40GB Multi-Mode 400m (40GBASE-CSR4)

QSFP-40G-CSR4-BCC

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$212.30 inc. GST
$193.00 ex. GST
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Description

The QSFP-40G-CSR4-BCC is a drop-in compatible replacement for the Cisco QSFP-40G-CSR4. This QSFP+ transceiver provides plug-and-play compatibility with Cisco 40G QSFP ports, supporting both native 40G links and 4x10G breakout applications. - 40GBASE-CSR4 and IEEE 802.3ba compliant, guaranteeing interoperability with standard 40G SR4 infrastructure - QSFP+ form factor delivering 40Gbps over multi-mode fibre at 850nm wavelength, up to 300m on OM3 and 400m on OM4 fibre - Each of four 10G lanes complies with IEEE 10GBASE-SR, enabling 4x10G breakout mode to four 10GBASE-SR interfaces - MTP/MPO-12 female connector for 12-fibre parallel ribbon cable, supporting hot-swappable operation - Digital diagnostics (DOM) via I2C interface per QSFP+ MSA, providing real-time monitoring of optical parameters

Features

• Four-lane parallel optical architecture transmitting 10.5Gbps per lane, aggregated to 40Gbps, with each lane meeting IEEE 10GBASE-SR electrical and optical specifications for guaranteed 4x10G breakout compatibility
• VCSEL laser transmitters operating at 850nm nominal wavelength paired with PIN photodiode receivers, optimised for low cost and high reliability in short-reach multi-mode applications
• Extended reach beyond standard 40GBASE-SR4: supports 300m on OM3 fibre (2000 MHz·km modal bandwidth) and 400m on OM4 fibre (4700 MHz·km modal bandwidth), compared to 100m and 150m respectively for SR4
• Hot-swappable QSFP+ MSA-compliant module with single +3.3V power supply, typical power consumption under 1.5W, enabling high-density 40G deployments without thermal concerns
• 12-fibre parallel ribbon interface via MTP/MPO-12 female connector, supporting both native 40G trunk cables and breakout cables for four duplex 10G connections, with minimum 0.5m cable distance per IEEE 802.3
• Digital diagnostics monitoring (DDM) accessible via I2C per QSFP+ MSA specification, exposing temperature, voltage, transmit power, and receive power for all four lanes in real time

Warranty

5-Year Advanced Warranty on All Blue Cable Co® Products

Blue Cable Co® offers a comprehensive 5-Year Advanced Warranty on all our branded products. Our advanced warranty ensures fast, hassle-free replacements to keep your network running smoothly. If a fault occurs, we’ll deliver a replacement part before you return the faulty item—minimising downtime and giving you complete peace of mind.

Choose Blue Cable Co® for reliable, high-quality network components backed by industry-leading warranty support.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

Also Known As

FAQs

Compatible SFP Selector

Technical Specifications

Brand: Blue Cable Co
BCC SKU: QSFP-40G-CSR4-BCC
Compatible Replacement For: QSFP-40G-CSR4
Compatibility: Cisco compatible
Lab Testing: Tested in Sydney, Australia
Warranty: 5-year advanced hardware replacement (Blue Cable Co)
Form Factor: QSFP+
Data Rate: 40Gbps (4x 10.5Gbps lanes)
Wavelength: 850nm
Fibre Type: Multi-mode (OM3, OM4)
Connector Type: MTP/MPO-12 female
DOM Support: Yes (digital diagnostics via I2C)
Standards: IEEE 802.3ba 40GBASE-SR4, IEEE 802.3ae 10GBASE-SR, QSFP+ MSA
Max Reach: 300m on OM3, 400m on OM4 (per datasheet, subject to fibre and link conditions)
Operating Temperature: 0 to 70°C

Also Known As

QSFP-40G-CSR4=, QSFP-40G-CSR4-RF

FAQs

Q: Will this work in place of the Cisco QSFP-40G-CSR4?
A: Yes. The QSFP-40G-CSR4-BCC is a direct replacement for the Cisco QSFP-40G-CSR4, matching the 40GBASE-CSR4 standard, QSFP+ form factor, 40Gbps data rate, 850nm wavelength, and reach specifications of 300m on OM3 and 400m on OM4 fibre. The module is plug-and-play compatible and supports both native 40G links and 4x10G breakout mode.

Q: Which Cisco platforms support this transceiver?
A: This module is compatible with Cisco switches and routers featuring QSFP+ ports that support 40GBASE-SR4 or 40GBASE-CSR4 optics. Compatibility is determined by the presence of a 40G QSFP+ interface and NOS support for the 40GBASE-CSR4 standard. Consult your platform documentation to confirm QSFP+ module support and native 40G or 4x10G breakout capability.

Q: What is the advantage of CSR4 over SR4, and when should I use it?
A: CSR4 extends the reach of 40GBASE-SR4 from 100m/150m (OM3/OM4) to 300m/400m respectively, using the same 850nm VCSEL technology and MTP/MPO-12 connector. Each 10G lane is IEEE 10GBASE-SR compliant, providing a guaranteed power budget for longer intra-building data centre runs where SR4 reach is insufficient but LR4 single-mode infrastructure is not yet deployed.

Q: Can I use this module in 4x10G breakout mode, and what cable do I need?
A: Yes. The QSFP-40G-CSR4-BCC supports 4x10G breakout to four independent 10GBASE-SR interfaces. You will need a 12-fibre MTP/MPO-12 to 4x duplex LC breakout cable (Type B polarity). Each of the four 10G lanes operates independently up to the same 300m (OM3) or 400m (OM4) reach as the native 40G mode, assuming compliant fibre and within the specified power budget.

Q: Does this module require forward error correction (FEC), and what is the bit error rate?
A: No FEC is required for native 40GBASE-CSR4 operation. The module complies with IEEE 40GBASE-SR4 and 10GBASE-SR specifications, guaranteeing a link bit error rate (BER) better than 1E-12 under standard operating conditions. FEC support, if available, is determined by the host platform and may improve margin on longer or higher-loss links, but is not mandatory for CSR4 compliance.

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100% compatible with equipment from major vendors

Coded and tested in our state of the art lab in Sydney

Cisco sfp-10g-sr transceiver module with metallic housing and a white label displaying serial number, model details, and regulatory markings.
Silver-colored sfp-10g-sr-bcc transceiver module with a white label featuring blue and black text, designed for 850nm wavelength optical communication.
Blue Cable Co
Cisco

Tested on real vendor hardware in Sydney

Every Blue Cable Co transceiver is coded for your platform and tested in our Sydney test rack on real vendor switches and firewalls before it ships. We check it is recognised and links up the same way the OEM optic does, so you don't find an "unsupported transceiver" error after it's installed.

Brands tested: Cisco, Meraki, Arista, Aruba, HPE, Juniper, Dell, Fortinet, Palo Alto, Check Point, Sophos, Moxa and NVIDIA. Speeds up to 100Gb.

  • 5 year replacement warranty
  • Sydney stock
  • Re-coding if you need it

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