Brand: Various (e.g., Cisco compatible) · SKU: QSFP-40 · MPN: QSFP-40 (General) · Category: Networking
The QSFP-40 (Quad Small Form-Factor Pluggable 40-Gigabit) is a high-density, low-power, hot-pluggable optical transceiver module designed for 40 Gigabit Ethernet connectivity in data centers, high-performance computing, and enterprise networks. Various specific models exist (e.g., SR4, LR4, BiDi) that dictate the fiber type, maximum distance, and wavelength. Common specifications for QSFP-40 modules include supporting 40 Gbps aggregate data rate over four electrical lanes operating at 10.3125 Gbps each, complying with the QSFP+ SFF-8436 Specification. Specific variants like the QSFP-40G-SR4 operate over OM3/OM4 Multimode Fiber (MMF) up to 100m/150m using 850nm wavelength. BiDi versions (e.g., QSFP-40G-SR-BD) use duplex LC connectors and bi-directional optics to reuse existing duplex MMF infrastructure over distances up to 150m with wavelengths around 850nm and 900nm. LR4 variants support longer distances up to 10km over Single-Mode Fiber (SMF). Digital Diagnostics Monitoring (DDM/DOM)
| Data Rate | 40 Gbps Aggregate (4x10G lanes) |
|---|---|
| Form Factor | QSFP+ |
| Power Supply | Single +3.3V |
| MSA Compliance | QSFP+ SFF-8436 |
| Temperature Range (Standard) | 0°C to 70°C |
| Electrical Interface Compliance | XLPPI per IEEE 802.3ba |
| Warranty | Varies, some compatible versions offer a limited lifetime warranty |
| Weight | Approx. 100g for some models |
| Dimensions | Approx. 13.5 x 18.4 x 72.4 mm |
The QSFP-40 is a versatile transceiver form factor primarily used for 40 Gigabit Ethernet uplinks in high-density network environments. It supports various physical media and distances based on the specific module type (SR4, LR4, BiDi, CSR4). It allows for high bandwidth density while maintaining a relatively small physical footprint compared to older form factors.
Yes, this QSFP-40 Gigabit Ethernet Transceiver Module (General) (QSFP-40) is 100% genuine Various (e.g., Cisco compatible) hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This QSFP-40 Gigabit Ethernet Transceiver Module (General) includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the QSFP-40.