Transceiver CBO QSFP28-100G-CWDM4 100G CWDM4 optical module QSFP28

The Transceiver CBO QSFP28-100G-CWDM4 100G CWDM4 optical module QSFP28 is a compact, hot-pluggable 100 Gigabit Ethernet fiber optic transceiver designed for high-density network equipment. Intended for short- to medium-reach metro and data center interconnects, this QSFP28 module supports CWDM4 wavelength multiplexing to transport four optical lanes at 25 Gbps each, providing a single 100G duplex fiber link. The module is suitable for integration in switches, routers and servers where space-efficient, high-bandwidth uplinks or interconnects are required.

Advantages

The module offers a small form factor with hot-swappable installation, enabling quick upgrades and maintenance without powering down host devices. CWDM4 wavelength division enables cost-effective 100G transmission over duplex single-mode fiber for short and medium reach, reducing the need for more complex multi-fiber cabling. Compatibility with QSFP28 ports provides straightforward interoperability with equipment that supports 100 Gigabit Ethernet optics, while the low power consumption and standardized electrical interface support dense deployment in racks and data center aggregation layers.

Suitable for

• 100 Gigabit Ethernet uplinks between aggregation switches in data centers
• Short- to medium-distance metro fiber interconnects
• Server-to-switch connections where high bandwidth is required
• Bandwidth expansion and refresh projects in enterprise networks

Key specifications

• Form factor: QSFP28 compact transceiver
• Data rate: 100 Gbps aggregate (4 × 25 Gbps lanes)
• Optical interface: CWDM4 wavelength multiplexing over duplex single-mode fiber
• Reach: designed for short- to medium-reach links (metro and data center interconnects)
• Connector: duplex LC-compatible interface
• Power: low-power QSFP28 module suitable for high-density racks
• Hot-pluggable: supports insertion and removal without host shutdown

How to use

Install the QSFP28 transceiver into a compatible QSFP28 port on the switch, router or server until it locks in place, then connect duplex single-mode fiber using LC connectors. Verify link status and speed through the host device management interface. Ensure both ends of the link use CWDM4-compatible transceivers and matching fiber type. For safe handling, observe ESD precautions and avoid touching the optical interfaces; keep dust caps on connectors when not in use.

Recommendations

For reliable performance, use clean, tested duplex single-mode fiber and LC connectors rated for the intended reach. Confirm that the connected equipment supports 100G CWDM4 optics and that transceiver firmware or port settings are configured for 100 Gigabit Ethernet. Plan cabling routes to minimize bending and stress on fibers and schedule periodic inspections and cleaning of connector endfaces to maintain optimal optical power levels.