Panduit FDC9N-24-LAAFLH FlexCore™ 24-Fiber OS2 LC Duplex to MPO-12 Cassette

The Panduit FDC9N-24-LAAFLH is a high-density fiber optic cassette engineered for datacenter and enterprise backbone-to-equipment breakout applications. This FlexCore™ module houses 24 strands of OS2 single-mode fiber (9µm core) in a compact polycarbonate enclosure, converting a single MPO-12 male trunk connector to twelve LC duplex ports on the front panel. Designed for deployment in FlexCore ODF and OSF chassis systems, this cassette enables structured fiber migration from high-density MPO backbone cabling to active equipment interfaces while maintaining compliance with ANSI/TIA-568-C.3, ISO/IEC 11801, and TIA-604 connector performance standards. The 292.8mm width and 11.7mm height profile fits standard 1RU FlexCore enclosures, supporting up to 144 fibers per rack unit when fully populated.

Key Features

• 24-fiber OS2 single-mode cassette with 9µm core diameter for extended-reach datacenter and campus backbone links
• MPO-12 male trunk input to twelve LC duplex outputs, supporting twelve duplex channels in a single module
• FlexCore™ platform compatibility for modular fiber distribution frame and splice frame deployments
• Black polycarbonate housing with 292.8mm × 11.7mm footprint for high-density 1RU installations
• Factory-terminated and tested to TIA-604-5 (FOCIS-5) LC and TIA-604-10 (FOCIS-10) MPO connector specifications
• Supports IEEE 802.3 Ethernet standards (1000BASE-LX, 10GBASE-LR, 40GBASE-LR4, 100GBASE-LR4) and ANSI T11.2 Fiber Channel rates
• RoHS 2002/95/EC compliant construction for European and global deployment requirements
• Pre-configured polarity management eliminates field guesswork on transmit/receive pair alignment

Architecture and Fiber Management: The FDC9N-24-LAAFLH uses a fanout architecture where a single 24-fiber MPO-12 male connector on the rear interfaces with the backbone trunk cable, while the front panel exposes twelve individual LC duplex connectors for patching to switches, servers, or patch panels. This design is critical in structured cabling environments where MPO trunk cables run vertically through risers or horizontally across rows, and cassettes provide the breakout point to traditional duplex LC equipment ports. The OS2 fiber type meets ISO/IEC 11801 category OF-500 specifications, supporting attenuation ≤0.4 dB/km at 1310nm and ≤0.3 dB/km at 1550nm, with zero-water-peak performance across the extended wavelength range (1260nm–1625nm). Each LC connector is factory-polished to less than 0.5 dB insertion loss and better than -50 dB return loss, ensuring low-loss connectivity for 10G, 40G, and 100G applications. The cassette's internal fiber routing uses controlled bend-radius management to prevent macrobending loss, with a minimum 30mm bend radius maintained throughout the module to preserve signal integrity on high-speed links. The MPO-12 connector features a male (pinned) configuration, which mates with female MPO-12 connectors on trunk cables—verify your trunk cable terminations before ordering to ensure proper mechanical mating. For insertion-loss budgeting, expect 0.3–0.5 dB per cassette (MPO + LC connectors combined), allowing 10GBASE-LR links up to 9.8km and 1000BASE-LX links beyond 10km when using quality OS2 fiber and clean connector endfaces.

Deployment Context and System Integration: This cassette is designed for Panduit FlexCore enclosures, which are rack-mounted or wall-mounted frames that accept slide-in cassette modules. In a typical datacenter deployment, you would install a 1RU or 2RU FlexCore chassis in the equipment rack, load it with multiple FDC9N-24-LAAFLH cassettes (a 1RU chassis typically holds up to six cassettes, providing 144 fibers total), and connect MPO trunk cables from the rear to backbone pathways leading to MDA/HDA distribution areas or inter-building links. The front LC ports then patch to switch ports using standard duplex LC patch cords. This architecture dramatically reduces cable congestion compared to running 24 individual duplex fibers, and simplifies MAC (Moves, Adds, Changes) operations—you can re-provision circuits by swapping patch cords at the front panel without disturbing the trunk infrastructure. The black housing color aids in visual organization when mixing fiber types or separating production/storage networks in multi-tenant or segmented datacenter environments. The 11.53" width is engineered to align with standard 19" rack width, leaving clearance for side-by-side installation and cable routing. When installing, ensure the FlexCore chassis provides adequate depth for the cassette body plus the rear MPO trunk cable bend radius (typically add 2–3" beyond the cassette depth for the MPO connector and cable management). For polarity management, verify the cassette's internal fiber mapping (Type A, B, or C per TIA-568-C.0 Annex B) matches your trunk cable's polarity scheme to ensure transmit/receive pairs align correctly across the link—incorrect polarity mapping will result in no-link conditions on duplex transceivers. The FDC9N-24-LAAFLH is optimized for twelve independent duplex channels; if deploying parallel-lane 40GBASE-SR4 or 100GBASE-SR4 optics, you will need a different cassette type designed for parallel-optics pinout. For mixed-speed deployments (1G, 10G, and 25G on the same cassette), OS2 fiber supports all rates without issue—just match the transceiver type and wavelength to the application, and confirm your loss budget accommodates the total link length plus connector/splice losses.

Standards Compliance and Application Fit: The FDC9N-24-LAAFLH meets ANSI/TIA-568-C.3 structured cabling requirements for optical fiber systems, ensuring compatibility with enterprise and datacenter cabling standards adopted across North America. ISO/IEC 11801 compliance extends that compatibility to international installations, particularly in EMEA and APAC regions where ISO standards govern datacenter infrastructure. TIA-604-5 (FOCIS-5) certification for LC connectors guarantees physical and optical performance parameters (endface geometry, insertion loss, return loss) meet the reference standard, while TIA-604-10 (FOCIS-10) certification for the MPO-12 connector ensures the same for the multi-fiber interface. RoHS compliance eliminates lead, mercury, cadmium, and other restricted substances, satisfying European Union directives and enabling deployment in regulated environments without exemption paperwork. The cassette's support for IEEE 802.3 Ethernet and ANSI T11.2 Fiber Channel standards means it will work with any switch or NIC using those protocols—from 1GbE optics up through 10GbE LR/ER modules, and from 8G Fiber Channel through 16G and 32G FC rates, provided you stay within the OS2 fiber's loss budget for your link length. For datacenter operators consolidating legacy 1G/10G infrastructure or deploying new leaf-spine fabrics with 10G server connections and 40G/100G uplinks, this cassette provides the structured breakout layer that keeps the physical infrastructure organized, auditable, and serviceable without specialized fusion-splicing skills—everything is plug-and-play at the connector level, so MAC operations are completed in minutes rather than hours. The factory-terminated design eliminates field termination errors and provides consistent, tested performance across every port, reducing troubleshooting time and ensuring predictable link budgets for capacity planning and network design validation.