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| Brand Name : | Cisco | 
| Model Number : | QSFP 40G SR4 | 
| Certification : | CE | 

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-SR4 | 
| Description | Cisco 40GBASE-SR4 QSFP Module for MMF | 
| Dimensions | 13.5 x 18.4 x 72.4 mm | 
| Wavelength (nm) | 850 | 
| Cable Type | MMF | 
| Core Size (microns) | 50.0 50.0 50.0  | 
| Modal Bandwidth (MHz-km) | 500 (OM2) 2000 (OM3) 4700 (OM4)  | 
| Cable Distance | 30m 100m 150m  | 
| Power Consumption (W) | 1.5 | 
| Pull Tab Color | Beige | 
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-SR4 | QSFP-40G-SR4-S= | 
| Description | Cisco 40GBASE-SR4 QSFP Module for MMF | Cisco 40GBASE-SR4 QSFP Module for MMF | 
| Dimensions | 13.5 x 18.4 x 72.4 mm | 13.5 x 18.4 x 72.4 mm | 
| Wavelength (nm) | 850 | 850 | 
| Cable Type | MMF | MMF | 
| Core Size (microns) | 50.0 50.0 50.0  | 50.0 50.0  | 
| Modal Bandwidth (MHz-km) | 500 (OM2) 2000 (OM3) 4700 (OM4)  | 2000 (OM3) 4700 (OM4)  | 
| Cable Distance | 30m 100m 150m  | 100m 150m  | 
| Power Consumption (W) | 1.5 | 1.5 | 
| Pull Tab Color | Beige | Beige | 
                                 
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