CB-M12-M12-MMF15M=: What Is It, How Does It Work, and Where to Buy?

​​Defining CB-M12-M12-MMF15M=: Core Technical Specifications​​

The ​​CB-M12-M12-MMF15M=​​ is a ​​Cisco-compatible MTP®-to-MTP® multi-mode fiber (MMF) breakout cable​​ designed for short-range, high-density data center connectivity. It features ​​12-fiber MTP connectors​​ on both ends and supports ​​40G/100G Ethernet​​ applications. With a ​​15-meter reach​​ over OM3/OM4 fiber, it is optimized for intra-rack or adjacent rack deployments.

Key parameters include:

• ​​Data rate​​: Up to 100G (4x25G channels).
• ​​Wavelength​​: 850nm VCSEL-based transmission.
• ​​Compliance​​: Meets ​​IEEE 802.3bm​​ standards for 40GBASE-SR4 and 100GBASE-SR10.

​​Primary Use Cases and Applications​​

This cable simplifies ​​spine-leaf architectures​​ and ​​top-of-rack (ToR) switching​​ by enabling high-speed links between switches, servers, or storage systems.

​​Typical scenarios​​:

• ​​Aggregating 10G/25G ports​​ into a 40G/100G uplink.
• ​​Connecting Cisco Nexus 9000 Series switches​​ in clustered setups.
• Supporting ​​SAN/NAS systems​​ requiring low-latency, high-throughput links.

​​Compatibility with Cisco Hardware​​

The ​​CB-M12-M12-MMF15M=​​ is engineered for Cisco devices with ​​QSFP28 (100G) or QSFP+ (40G) ports​​. Verified compatible platforms include:

• ​​Nexus 9300-EX/FX/FX2 switches​​.
• ​​UCS 6454 Fabric Interconnects​​.
• ​​MDS 9700 Series​​ directors for storage networking.

Always cross-reference Cisco’s ​​Hardware Compatibility List (HCL)​​ to avoid mismatches.

​​Performance vs. Limitations: What Users Should Know​​

While the cable excels in short-distance, high-density environments, its ​​15-meter range​​ restricts use to localized data center racks. For longer distances, single-mode fiber (SMF) alternatives are recommended.

​​Critical considerations​​:

• ​​Bend radius​​: Avoid sharp bends to prevent signal loss.
• ​​Cleanliness​​: MTP connectors require regular inspection to avoid dust-induced errors.
• ​​Heat management​​: Dense cabling may impede airflow—plan rack layouts carefully.

​​Where to Source Reliable CB-M12-M12-MMF15M= Cables​​

Third-party suppliers like itmall.sale offer cost-effective alternatives to Cisco-branded cables. Prioritize vendors that provide:

• ​​Pre-terminated testing reports​​ (IL/RL metrics).
• ​​Cisco-specific firmware compatibility​​.
• ​​Plug-and-play readiness​​ to reduce deployment downtime.

For guaranteed quality, explore options at [“CB-M12-M12-MMF15M=” link to (https://itmall.sale/product-category/cisco/).

​​Final Take: Balancing Cost and Risk in High-Speed Deployments​​

While OEM cables ensure seamless integration, third-party options like the ​​CB-M12-M12-MMF15M=​​ can cut costs by 50–70% without sacrificing performance—if rigorously tested. In large-scale deployments, this cable is a pragmatic choice for budget-aware engineers. However, always validate supplier claims with real-world testing before full-scale adoption.