Network Cable BlueLAN JNP-100G-4X25G-2M QSFP28 to 4x25GBASE-CR SFP28 2M Blue

The BlueLAN JNP-100G-4X25G-2M is a passive 100GBASE-CR4 breakout direct attach cable that connects a QSFP28 port to four SFP28 ports over a 2 meter link. Constructed with AWG26 wiring and a robust jacket, this cable supports four independent 25G lanes and provides a low-latency, high-bandwidth interconnect suitable for top-of-rack switches, aggregation devices and server NICs in dense data center environments.

Advantages

This direct attach cable offers a cost-effective, low-power solution for short-reach 100G connectivity without the need for optics. The passive QSFP28 to 4×SFP28 breakout design simplifies cabling between multi-rate ports and reduces equipment complexity. AWG26 conductors ensure consistent signal integrity across the 2 m length, while the standardized form factors enable plug-and-play deployment in compatible QSFP28 and SFP28 slots.

Suitable for

• High-density server-to-switch connections in data centers
• Aggregation and leaf-spine network deployments
• Direct connections between 100G QSFP28 ports and multiple 25G SFP28 interfaces
• Low-latency interconnects for storage and compute clusters

Key specifications

• Connector types: QSFP28 (one end) to 4×SFP28 (other end)
• Data rate: 100 Gbps aggregate (4×25 Gbps lanes)
• Length: 2 meters
• Cable gauge: AWG26 conductors
• Type: Passive direct attach breakout cable (DAC)
• Compatibility: QSFP28 and SFP28 compliant ports supporting 100G/25G electrical interfaces

How to use

Insert the QSFP28 plug into the 100G-capable QSFP28 port on the source device and plug each SFP28 connector into the target device ports. Ensure devices are powered down or support hot-plugging according to manufacturer guidelines before insertion or removal. Once connected, verify link status and lane mapping in device management interfaces to confirm all four 25G channels are active and recognized by the hosts or switches.

Usage recommendations

Use this cable for short-reach connections within racks or between adjacent racks. Avoid tight bends and excessive pulling; maintain recommended bend radius to preserve signal integrity. For longer-distance or optical isolation needs, consider active DACs or fiber optic transceivers instead.