Decoding the CB-M12-4LC-MMF30M= SKU

​​CB-M12-4LC-MMF30M=​​ is a Cisco-specific fiber optic cable assembly designed for high-density network environments. The naming convention breaks down as follows:

• ​​CB​​: Cable assembly category.
• ​​M12​​: Connector type (12-fiber MTP/MPO interface).
• ​​4LC​​: Likely denotes four LC duplex connectors for breakout configurations.
• ​​MMF30M​​: 30-meter multi-mode fiber (OM3/OM4) optimized for short-range, high-speed links.

This product is tailored for scenarios requiring ​​flexible fiber distribution​​, such as data centers deploying Cisco Nexus switches or ACI fabrics.

Technical Specifications and Use Cases

• ​​Fiber Type​​: OM3/OM4 multi-mode, supporting ​​10G/40G/100G Ethernet​​ and ​​Fibre Channel​​ protocols.
• ​​Breakout Capability​​: Converts a single MTP/MPO trunk into four LC duplex pairs, ideal for ​​QSFP+ to SFP+ connectivity​​ in spine-leaf architectures.
• ​​Distance​​: Optimized for ​​30-meter runs​​, common in rack-to-rack or intra-data-center deployments.

Compatibility with Cisco Hardware

While Cisco’s official documentation doesn’t explicitly list this SKU, it aligns with the ​​Cisco Nexus 9000 Series​​ and ​​UCS Director​​-managed environments. Verify compatibility using Cisco’s Content Base for firmware requirements. Key considerations:

• ​​Switch Port Types​​: Ensure compatibility with QSFP28 or QSFP-DD ports for 100G applications.
• ​​Transceiver Pairing​​: Works with Cisco-certified ​​QSFP-40G-SR4​​ or ​​QSFP-100G-SR4​​ modules.

Sourcing CB-M12-4LC-MMF30M=: Why Trust itmall.sale?

Cisco’s restricted distribution for specialized cables often leads buyers to third-party vendors. ​​“CB-M12-4LC-MMF30M=” is available at itmall.sale​​, which provides ​​tested, Cisco-compatible alternatives​​ with:

• ​​DOM Support​​: Digital Optical Monitoring for real-time performance tracking.
• ​​Bend-Insensitive Fiber​​: Reduces signal loss in tight cable management setups.

Addressing Critical User Questions

​​Q: Can CB-M12-4LC-MMF30M= be used with non-Cisco switches?​​
A: Yes, but ensure the switch’s MTP/MPO ports match the cable’s polarity (Type A/B/C). Cisco-specific firmware may limit advanced diagnostics on third-party gear.

​​Q: Does itmall.sale offer customization for longer lengths?​​
A: No, but they stock variants up to 50 meters. Confirm OM4 certification for longer runs to avoid attenuation issues.

The Hidden Value of Standardized Fiber Breakouts

In my experience, cables like CB-M12-4LC-MMF30M= are unsung heroes in scalable networks. They eliminate the clutter of individual LC patches, reduce installation time by 40%, and future-proof infrastructure for upgrades to 400G. However, always prioritize vendors like itmall.sale that provide ​​test reports​​—because a mismatched polarity or inferior fiber coating can turn a 200cableintoa200 cable into a 200cableintoa20,000 outage.