United StatesName:
Added to cart 28 times recently
In stock - Ready to Ship
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
40G-QSFP-LM4-C
40GBASE-LM4 QSFP+ Optic MMF/SMF Brocade Compatible
TRUSTED, TRIED, PROVEN
Inventory Delivered By
& Verified By
Solutions Powered By
40G-QSFP-LM4-C is a QSFP transceiver designed to support a 40G data rate, featuring an LC connector and engineered for long-range transmission using single-mode fiber. It is optimized to handle Ethernet and Fibre Channel protocols, ensuring reliable, high-speed connectivity in modern network applications.
40G-QSFP-LM4-C offers a compact form factor with standardized physical dimensions that facilitate seamless integration in data centers, enterprise networks, and telecom environments. Its robust design caters to high-density deployments while maintaining performance over extended transmission distances.
40G-QSFP-LM4-C price is is available on request. Get immediate quote.
Request bulk order quote for 40G-QSFP-LM4-C for additional pricing. Browse the full Brocade Networking Compatible Qsfp+ series or explore all Orm products.
To get the detailed certification, please go to the Compliance Center.
| 40G-QSFP-LM4-C |  40G-QSFP-LR4-C |  40G-QSFP-SR4-INT-C |  40G-QSFP-ER4-C |  40G-QSFP-ESR4-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP | QSFP | QSFP | QSFP |
| Data Rate | 40G | 40G | 40G | 40G | 40G |
| Connector Type | LC | LC | MPO | LC | LC |
| Wavelength | 1310nm | 1310nm | 850nm | 1310 nm | 850nm |
| Transmission Distance | Long-Range | Long-Range | Short-Range | Extended-Range | Short-Range |
| Fiber Type | Single-mode | Single-mode | Multi-mode | Single-mode | Multi-mode |
| Max Distance | 10 km | 10 km | 100 meters | 40 km | 100m |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Power Consumption | N/A | 6.6W | 4.5W | 6.5W | 3.5W |
| 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, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | 40G-QSFP-LM4-C | 40G-QSFP-LR4-C | 40G-QSFP-SR4-INT-C | 40G-QSFP-ER4-C | 40G-QSFP-ESR4-C |
| Height | N/A | 0.68 inches | N/A | N/A | N/A |
| Width | N/A | 1.17 inches | N/A | N/A | N/A |
| Depth | N/A | 1.39 inches | N/A | N/A | N/A |
| Weight | N/A | 0.15 lbs | N/A | N/A | N/A |
Versatile LM4 performance. Works flawlessly over both MMF and SMF in our hybrid fiber environment. Very convenient.
Reliable 40G signaling across different fiber types. Significant ROI and perfect integration with our Brocade switches.
Professional grade LM4 optics. Deployment was simple and the signal integrity has been perfect on all links.
Steady throughput and robust construction. The ability to use existing MMF for 40G is a huge plus.
Top-tier reliability. Indistinguishable from original hardware with excellent flexibility for our changing network needs.
The 40G-QSFP-LM4-C is a 40GBASE-LM4 QSFP+ transceiver designed for multimode and single-mode fiber, providing 40 Gb/s data rates over Brocade switches.
It supports both 50/125 µm multimode fiber (MMF) and 9/125 µm single-mode fiber (SMF) using an LC duplex connector interface.
Over OM3 MMF, it reaches up to 100 m; on OM4 MMF, up to 150 m; and on SMF, up to 10 km at 40 Gb/s.
Yes. It is tested and validated for seamless interoperability with Brocade Fibre Channel and Ethernet switches.
It meets IEEE 802.3ba 40GBASE-LM4 and RoHS-6 environmental regulations, ensuring industry-standard performance and safety.
It uses four wavelengths around 1310 nm, each transmitting 10 Gb/s, combined for a total of 40 Gb/s.
The module operates reliably between 0 °C and +70 °C (32 °F to 158 °F) for standard commercial deployments.
Simply slide the QSFP+ module into the QSFP+ port until it clicks, then connect the LC duplex fiber cable to the adapter cage.
It is compatible with most Brocade 40 GbE QSFP+ ports and other OEM platforms that support 40GBASE-LM4.
Typical power consumption is under 2.5 W, meeting QSFP+ power budgets for energy-efficient data centers.
Use a dry, lint-free fiber optic cleaning tool or isopropyl alcohol wipe on the LC ferrules; avoid touching the optical surfaces.
The module’s Mean Time Between Failures (MTBF) exceeds 1,000,000 hours, ensuring long-term reliability.
It comes with a one-year manufacturer warranty covering defects in materials and workmanship under normal use.
Verify fiber polarity, inspect connector cleanliness, check switch port settings, and ensure the module firmware is up to date.
LM4 uses four separate 10 Gb/s lanes at 1310 nm for cost-effective 40 Gb/s over both MMF and SMF, unlike single-wavelength 40 GbE solutions.
Contact your authorized Brocade reseller or place an order online using SKU 40G-QSFP-LM4-C for quick fulfillment.