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Cisco

Cisco CB-M12-4LC-MMF4M | MMF Aqua | MPO-12 to 4x LC Duplex Fanout | SR4 breakout harness | 4 m

SKU:CB-M12-4LC-MMF4M

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Description

High‑density multimode fiber breakout harness for SR4 applications. Converts a single MPO‑12 trunk to four LC duplex pairs for easy aggregation or QSFP SR4 breakout. Ideal for short‑reach links in data center and campus environments.

Features

- High-density MPO-12 to 4x LC duplex fanout for efficient panel and spine/leaf cabling
- Pre-terminated connectors reduce install time and simplify QSFP SR4 breakouts
- Optimized for short-reach 850 nm multimode SR applications
- Compact, flexible legs for clean routing to LC ports
- Ideal for data center, aggregation, and ToR breakout scenarios
- Vendor-agnostic compatibility with standards-based SR4 optics

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: What is this cable used for?
A: Breaking out an MPO-12 SR4 link into four LC duplex connections, commonly from a QSFP SR4 port to four LC-based ports.

Q: Does it support 40G to 4x10G or 100G to 4x25G?
A: Yes, when paired with compatible SR4 optics and devices that support breakout.

Q: Is this OM3 or OM4?
A: Aqua MMF is typically used for OM3/OM4; confirm with your cabling plant and distance requirements.

Q: Is this single-mode?
A: No, this is multimode fiber (MMF).

Q: Which polarity is it?
A: It is a standard SR4 breakout harness; verify your site’s polarity and patching scheme to ensure alignment.

Technical Specifications

- Cable type: Multimode fiber (MMF), aqua jacket
- Length: 4 m
- Connector A: MPO-12
- Connector B: 8x LC (4x LC duplex)
- Breakout style: SR4 fanout harness (QSFP to four LC duplex links)
- Typical wavelength support: 850 nm SR applications
- Use case: QSFP SR4 breakout to four SFP+/SFP28 LC ports (with compatible optics)
- Fiber count: 12‑fiber trunk to 4 duplex LC pairs
- Polarity: Standard breakout harness (verify site polarity scheme before deployment

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