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The Cisco® 40GBASE QSFP (Quad Small Form-Factor Pluggable) portfolio offers customers a wide variety of high-density and low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing 00networks, enterprise core and distribution layers, and service provider applications.
Table 1 shows the Quick Specs.
| Product Code | QSFP-40G-LR4= |
| Description | Cisco 40GBASE-LR4 QSFP Module for SMF with OTU-3 data-rate support |
| Dimensions | 13.5 x 18.4 x 72.4 mm |
| Wavelength (nm) | 1310 |
| Cable Type | SMF |
| Core Size (microns) | G.652 |
| Modal Bandwidth (MHz-km) | |
| Cable Distance | 10km |
| Power Consumption (W) | 3.5 |
| Pull Tab Color | Blue |
Features and benefits of Cisco QSFP 40G modules:
•Hot-swappable input/output device that plugs into a 40 Gigabit Ethernet Cisco QSFP port
•Interoperable with other IEEE-compliant 40GBASE interfaces where applicable
•Certified and tested on Cisco QSFP 40G ports for superior performance, quality, and reliability
•High-speed electrical interface compliant to the IEEE 802.3ba standard
•QSFP Form factor, 2-wire I2C communication interface and other low-speed electrical interface compliant to SFF 8436 and QSFP Multisource Agreement (MSA)
Table 2 shows the comparison.
| Product Code | QSFP-40G-ER4= | QSFP-40G-LR4= |
| Description | Cisco 40GBASE-ER4 Module for SMF with OTU-3 data-rate support | Cisco 40GBASE-LR4 QSFP Module for SMF with OTU-3 data-rate support |
| Dimensions | 13.5 x 18.4 x 72.4 mm | 13.5 x 18.4 x 72.4 mm |
| Wavelength (nm) | 1310 | 1310 |
| Cable Type | SMF | SMF |
| Core Size (microns) | G.652 | G.652 |
| Modal Bandwidth (MHz-km) | ||
| Cable Distance | 40km | 10km |
| Power Consumption (W) | 3.5 | 3.5 |
| Pull Tab Color | Red | Blue |
QSFP-40G-LR4= Specification | |
| Description | Cisco 40GBASE-LR4 QSFP Module for SMF with OTU-3 data-rate support |
| Dimensions | 13.5 x 18.4 x 72.4 mm |
| QSFP Port cabling specifications | |
| Wavelength (nm) | 1310 |
| Cable Type | SMF |
| Core Size (microns) | G.652 |
| Modal Bandwidth (MHz-km) | |
| Cable Distance | 10km |
| Power Consumption (W) | 3.5 |
| Pull Tab Color | Blue |
| Optical characteristics | |
| Type | 40GBASE-LR4 with OTU3 data rate support, 1310 nm, SMF |
| Transmit Power (dBm) | Max:+2.3 per lane Min:-7.0 per lane |
| Receive Power (dBm) | Max:+2.3 per lane Min:-13.7 per lane |
| Transmit and Receive Wavelength (nm) | Four lanes: 1271, 1291, 1311, 1331 |
| Environmental conditions | |
| Commercial temperature | 0 to 70°C (32 to 158°F) |
| Storage temperature | -40 to 85°C (-40 to 185°F) |
| Regulatory and standards compliance | |
| Standards
| •GR-20-CORE: Generic Requirements for Optical Fiber and Optical Fiber Cable •GR-326-CORE: Generic Requirements for Single-Mode Optical Connectors and Jumper Assemblies •GR-1435-CORE: Generic Requirements for Multifiber Optical Connectors •IEEE 802.3ba (-SR4, -LR4) •IEEE 802.3ae (-CSR4) •QSFP+ MSA SFF-8436 •SFP+ MSA SFF-8431 and -8461 •RoHS 6 |
| Safety
| •Cable jacket of QSFP copper modules is UL E116441 Compliant •QSFP copper cables are ELV Compliant |