The QSFP+ module is designed for use in 40GBASE Ethernet throughput up to 40km over single mode fiber (SMF) using a wavelength of 1310nm via duplex LC connectors. This transceiver is compliant with QSFP+ MSA, IEEE 802.3bm 40GBASE-ER4 and OTU3 standard. Digital diagnostics functions are also available via the I2C interface, as specified by the QSFP+ MSA, to allow access to real-time operating parameters. With these features, this easy to install, hot swappable transceiver is suitable to be used in various applications, such as data centers, high-performance computing networks, enterprise core and distribution layer applications.
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/20220721172654am2e22.jpg)
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![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/60x60/20220721172654am2e22.jpg)
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/60x60/20220721172659j17ek8.jpg)
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/60x60/20220630154925xro3wp.jpg)
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/60x60/20220721172705ijvo8x.jpg)
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/mainImg/60x60/20220630154928x5t3ug.jpg)
![Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module This picture is about QSFP-ER4-40G.](https://resource.fs.com/mall/products/60x60/36173.F.jpg)
Cisco QSFP-40G-ER4 Compatible QSFP+ 40GBASE-ER4 1310nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module
#36173
#36173
US$889.00
FS P/N: QSFP-ER4-40GFS P/N: QSFP-ER4-40G
2.5K Solds
175 Reviews
33 Questions
Transceiver Models:
88 in U.S. Warehouse, Get it by 11 Sep, 2024
142 in Global Warehouse, Get it by 9 Sep, 2024
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Deliver to New York, 10010
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5-Year Warranty
30-Day Returns
30-Day Exchange
Cisco QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ Optical Transceiver Module (SMF, 1310nm, 40km, LC, DOM)
Specifications
Cisco Compatible
QSFP-40G-ER4
Vendor Name
FS
Form Factor
QSFP+
Max Data Rate
44.6Gbps (4x 11.2Gbps)
Wavelength
1310nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transimitter Type
DFB CWDM
Receiver Type
APD
TX Power
-2.7~4.5dBm
Receiver Sensitivity
<-21.2dBm
Power Budget
18.5dB
Receiver Overload
-4.5dBm
Power Consumption
≤3.5W
Extinction Ratio
>5.5dB
Host FEC
Supported
Bit Error Ratio (BER)
1E-12
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Protocols
OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant
Quality Testing Program
Quality Testing Program
![](https://resource.fs.com/mall/ckfinder/ftp_images/product/20220902172543_802.jpg)
Optical Transceivers Testing Learn more
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Features
40G Connectivity for Data Center
Featured with low-power, high-density and high-speed, the QSFP+ transceiver offers a popular way to help you quickly ramp up to 40G transmission.
Tested in Host Devices for Proven Interoperability
Every unit is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations.
![](https://resource.fs.com/mall/fs_scene_images/20230627144826rqmkga.jpeg)
Comprehensive Testing Increases Reliability
Qualified through a rigorous process with advanced equipments to ensure you get the high quality and reliable optics.
Optical Spectrum Test
No Packet Loss & CRC
Eye Pattern Test
Mask Margin >20%
Bit Error Rate Test
BER 1E-12
Temperature Test
0~70°C
Center Wavelength | 1310nm | 1310nm | 1310nm | 1310nm |
Connector | Duplex LC | MTP/MPO-12 Male | Duplex LC | Duplex LC |
Cable Distance (Max.) | 40km | 10km | 10km | 80km |
Cable Type | SMF | SMF | SMF | SMF |
Transmitter Type | DFB CWDM | 4x DFB | DFB CWDM | EML |
Packaging Technology | BOX | BOX | BOX | BOX |
Chip | Semtech | MAXIM | Semtech | Semtech |
Power Consumption | ≤3.5W | ≤2.5W | ≤3.5W | ≤4.5W |
Protocols | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant | 40G Ethernet, MSA Compliant | OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant | QSFP+ MSA, IEEE 802.3ba Compliant |
Application | Data Center 40GBASE Ethernet | Data Center 40GBASE Ethernet 40G to 4x10G Breakout | Data Center 40GBASE Ethernet | Data Center 40GBASE Ethernet |
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Customer Reviews
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A***r
Poland
July 11, 2023
QSFP-40G-ER modules are working very well. We had no issues installing and getting them up and running. We are also very satisfied by your services.
Verified Purchase
Helpful 2
Comment 0A***r
Poland
July 11, 2023
QSFP-40G-ER modules are working very well. We had no issues installing and getting them up and running. We are also very satisfied by your services.
Verified Purchase
Helpful 2
Comment 0C***s
United States
August 01, 2022
I purchased transceivers from FS previously. I can give you the feedback now. They are good and comparable with the original. FS is also recommended by service providers. FS has a good name.
Verified Purchase
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