100G QSFP SR4
The 100G QSFP28 SR4 optical module features four independent transmit and receive channels with an 8/12-core MTP/MPO interface, suitable for a maximum transmission distance of up to 100 meters when used with multimode jumpers (OM3). Primarily designed for 100G data centers, it operates at a wavelength of 850nm, with a working temperature range from 0 to 70 degree centigrade. Additionally, it incorporates built-in digital diagnostic monitoring (DDM) functionality.

100G QSFP LR4
The QSFP28 LR4 stands as a hot-pluggable, full-duplex optical module that aligns with the IEEE 802.3ba standard. Tailored for extended-range transmission in 100G Ethernet applications, it operates within the 1295nm to 1310nm wavelength range. Utilizing single-mode fiber jumpers, it achieves an impressive transmission distance of up to 10 kilometers.

100G QSFP ER4
The QSFP28 Optical Transceiver Module, compatible with the Cisco QSFP-100G-ER4L-S, is meticulously engineered for 100GBASE Ethernet, delivering a throughput of up to 40km over single-mode fiber (SMF) with a 1310nm wavelength via duplex LC connectors. Its distinct BOX+FPC+PCBA design ensures superior reliability, airtightness, and heat dissipation performance. This transceiver strictly adheres to the IEEE 802.3ba 100GBASE-ER4 Lite standard, offering advanced digital diagnostics functions accessible through the I2C interface as per QSFP28 MSA specifications, facilitating real-time access to operational parameters.

100G QSFP ZR4
The QSFP-100G-ZR4-S Compatible QSFP28 Optical Transceiver Module from Cisco is engineered for efficient utilization in 100GBASE Ethernet setups, delivering seamless throughput over single-mode fiber (SMF) for distances up to 80km. Operating at a wavelength of 1310nm and employing duplex LC connectors, this transceiver adopts a separate BOX+FPC+PCBA design, ensuring superior reliability, airtightness, and optimal heat dissipation performance.

100G QSFP CWDM4
The 100G QSFP28 CWDM4 optical module is commonly used for 100G interconnection in data centers and enterprise networks with transmission distances not exceeding 2 kilometers. The wiring is straightforward, requiring the insertion of two 100G QSFP28 CWDM4 optical modules into the corresponding ports of two 100G switches. Additionally, LC duplex fiber jumpers are used in conjunction with fiber adapter panels or fiber distribution boxes to achieve 100G interconnection. These fiber adapter panels or distribution boxes can be installed on fiber distribution racks, making this wiring method suitable for structured cabling systems.