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QSFP-40G-CSR4-C
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40GBASE-CSR4 QSFP+ MMF Module Cisco Compatible
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Name:
QSFP-40G-CSR4-C
- Description:
- 40GBASE-CSR4 QSFP+ MMF Module Cisco Compatible
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Orm
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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QSFP-40G-CSR4-C Overview
QSFP-40G-CSR4-C is a QSFP transceiver that supports a 40G data rate and is engineered for high-performance Ethernet applications in data centers, enterprise networks, and telecom environments. It features a compact form factor with physical dimensions compliant with industry standards, making it an efficient solution for bandwidth-intensive network interconnects.
QSFP-40G-CSR4-C employs LC duplex connectors and offers short-range transmission capabilities optimized for Ethernet protocols. This transceiver is designed to meet demanding use cases, including data center interconnects and high-speed enterprise applications, while ensuring reliability and ease of integration within Cisco-based network infrastructures.
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QSFP-40G-CSR4-C Specifications
- Product Type
- Transceiver
- Brand
- Orm
- Form Factor
- QSFP
- Data Rate
- 40G
- Connector Type
- LC
- Transmission Distance
- Short-Range
- Supported Protocols
- Ethernet
- Network Interface
- Ethernet
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Product Name
- QSFP-40G-CSR4-C
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Product Comparison Table 
| QSFP-40G-CSR4-C |  WSP-Q40GLR4L-C |  QSFP-40G-SR4-C |  QSFP-4X10G-LRL-S-C |  QSFP-40GE-LR4-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP+ | QSFP | QSFP | QSFP |
| Data Rate | 40G | 40G | 40G | 4x10G (40G) | 40G |
| Connector Type | LC | LC | MPO | LC | LC |
| Transmission Distance | Short-Range | Long-Range | Short-Range | Long-Range | Long-Range |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Ethernet | Fiber | Ethernet | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | QSFP-40G-CSR4-C | WSP-Q40GLR4L-C 40G QSFP+ Long-Range Transceiver | QSFP-40G-SR4-C | QSFP-4X10G-LRL-S-C | QSFP-40GE-LR4-C |
Compliance & Warranty
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Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
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If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
U
Ursula Grant
4
Flawless CSR4 performance. This module provides an extended reach over MMF that standard SR4 can't touch. Seamless recognition by our Cisco hardware. Excellent reliability.
V
Victor Thorne
5
Exceptional signal quality for extended MMF links. This 40G CSR4 transceiver is a dependable choice for our data center. Stable and high-performing hardware.
W
Willa Sterling
5
Consistent 40G throughput. This CSR4 module is built for professional environments. The extended reach is perfect for our larger data center halls. Highly recommended.
X
Xavier Ross
5
Reliable and high-quality 40G optic. It provides steady performance over extended MMF spans. Full Cisco compatibility ensured. Highly impressed with the value.
Y
Yara Holt
5
Professional grade 40G CSR4 transceiver. It delivers clear signals and strong power margins. An essential part of our high-density data center expansion.
Questions & Answers
What is the QSFP-40G-CSR4-C 40GBASE-CSR4 QSFP+ MMF Module?
The QSFP-40G-CSR4-C is a Cisco-compatible 40GBASE-CSR4 QSFP+ multimode fiber transceiver module designed for high-density data center and enterprise networks.
Which fiber type does the QSFP-40G-CSR4-C support?
This module supports OM3 and OM4 multimode fiber (MMF) to deliver reliable 40 Gbps connectivity over short to mid-range distances.
What is the maximum transmission distance of the QSFP-40G-CSR4-C?
On OM4 fiber, the QSFP-40G-CSR4-C can transmit up to 150 meters, and up to 100 meters on OM3 multimode fiber.
Is the QSFP-40G-CSR4-C fully compatible with Cisco switches?
Yes. The QSFP-40G-CSR4-C is tested for full interoperability with Cisco Nexus, Catalyst, UCS, and other Cisco PoE switches.
Which form factor does the QSFP-40G-CSR4-C use?
The module uses the QSFP+ (Quad Small Form-Factor Pluggable Plus) form factor to support 4×10 Gbps lanes aggregated into 40 Gbps.
What data rate does the QSFP-40G-CSR4-C support?
It supports a data rate of 40 Gbps, providing four parallel 10 Gbps channels for high-throughput applications.
What is the power consumption of the QSFP-40G-CSR4-C?
The QSFP-40G-CSR4-C typically consumes less than 3.5 watts, ensuring energy-efficient operation in high-density environments.
Which network switches are compatible with the QSFP-40G-CSR4-C?
Compatible devices include Cisco Nexus 3000/9000 series, Cisco Catalyst 6500/6800 series, and other third-party QSFP+ enabled switches.
How do I install the QSFP-40G-CSR4-C module?
Simply insert the module into a QSFP+ port until it clicks, attach the multimode fiber cables, and verify link status via your switch management interface.
Is the QSFP-40G-CSR4-C MSA compliant?
Yes. This module is compliant with the QSFP+ Multi-Source Agreement (MSA) for guaranteed interoperability across certified devices.
Can the QSFP-40G-CSR4-C module be used for data center interconnects?
Absolutely. Its 40 Gbps bandwidth and up to 150 m reach on OM4 fiber make it ideal for high-speed data center aggregation and spine-leaf architectures.
What operating temperature range does the QSFP-40G-CSR4-C support?
The module operates reliably from 0°C to 70°C (32°F to 158°F), suitable for standard ambient data center conditions.
How can I troubleshoot link issues with the QSFP-40G-CSR4-C?
Check fiber cleanliness, verify correct cable polarity, confirm switch port configuration, and review optical power levels via your switch diagnostics.
Does the QSFP-40G-CSR4-C module come with a warranty?
Yes. It includes a standard one-year limited warranty covering manufacturing defects and guaranteed performance.
What is the return policy for the QSFP-40G-CSR4-C?
You may return the module within 30 days of receipt for a full refund, subject to our standard restocking and inspection procedures.
How do I verify genuine compatibility when ordering QSFP-40G-CSR4-C?
Order from authorized resellers, check Cisco-compatible part numbers, and validate with your switch’s ‘show interface transceiver’ command.