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.

FS for Cisco QSFP-40G-CSR4 compatible QSFP+ optical transceiver provides 40GBASE-CSR4 links up to 400m over multimode fibre (OM4 MMF) at a wavelength of 850nm using a MTP/MPO connector.
| Cisco Compatible | QSFP-40G-CSR4 |
| Vendor Name | FS |
| Form Factor | QSFP+ |
| Max. Data Rate | 42Gbps (4x 10.5Gbps) |
| Wavelength | 850nm |
| Max. Transmission Distance | 400m@OM4 |
| Connector | MTP/MPO-12 Male |
| Media | MMF |
| Transimitter Type | VCSEL 850nm |
| Receiver Type | PIN |
| TX Power | -7.5~0dBm |
| Receiver Sensitivity | <-9.9dBm |
| Power Budget | 2.4dB |
| Receiver Overload | 2.4dBm |
| Max. Power Consumption | ≤1.5W |
| Extinction Ratio | >3dB |
| Host FEC | Supported |
| Bit Error Ratio (BER) | 1E-12 |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | 40G Ethernet, SATA/SAS3, IEEE 802.3ba, MSA Compliant |
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.
Every unit is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations. Check compatibility with our <a href="/de-en/tool/compatibility-tool-h0026">Optics-to-Device Compatibility Tool</a>.<br/>
Qualified through a rigorous process with advanced equipments to ensure you get the high quality and reliable optics. Learn more at the <a href="/de-en/specials/optical-transceivers-test-bed-151.html" >Test Center</a>.