Panduit FSUYPXRNNNNF050 FlexCore 24-Fiber OM4+ LC Duplex Cassette

The Panduit FSUYPXRNNNNF050 is a front-access FlexCore fiber optic cassette delivering 24 strands of OM4+ multimode fiber in a space-efficient, rack-mountable assembly. Designed for high-density datacenter and enterprise network deployments, this cassette features factory-terminated LC duplex connectors on the front panel with unterminated fiber tails on the rear, enabling fusion splicing to backbone cable or direct termination to match your infrastructure. The plenum-rated (OFNP) jacket meets NEC requirements for installation in air handling spaces, and the polycarbonate housing withstands the physical demands of frequent access in production environments.

Key Features

• 24-fiber OM4+ multimode cassette supporting 40GBASE-SR4, 100GBASE-SR4, and future 400G migrations
• Front-access LC duplex connectors (12 duplex ports) for tool-free patching without rear-rack access
• Unterminated rear tails for fusion splicing or field termination to trunk cable
• Plenum (OFNP) rated for installation in air handling spaces per NEC Article 770
• Polycarbonate housing with integrated cable management and strain relief
• Compliant with ISO/IEC 11801, ANSI/TIA-568-C.3, TIA-604-5 (FOCIS-5), TIA-604-10 (FOCIS-10), and IEEE 802.3
• 50-micron core diameter optimized for short-reach datacenter applications up to 150 meters at 100G
• Factory-tested and RoHS 2002/95/EC compliant
• Compact 11.53" width × 0.46" height form factor fits standard 1U fiber enclosures

OM4+ fiber represents the current standard for datacenter multimode connectivity, offering 50-micron core diameter with laser-optimized performance that supports 40 Gigabit Ethernet (40GBASE-SR4) up to 150 meters and 100 Gigabit Ethernet (100GBASE-SR4) up to 100 meters using parallel optics. The "plus" designation indicates enhanced manufacturing tolerances and modal bandwidth characteristics that provide headroom for future 400G migrations on existing infrastructure. Each of the 12 LC duplex ports on the FSUYPXRNNNNF050 front panel terminates two fibers (transmit/receive pairs), delivering full 24-strand capacity in a single cassette module. The LC footprint—roughly half the size of SC connectors—enables port densities that would be impossible with legacy connector types, a critical advantage when rack space costs hundreds of dollars per U and fiber counts routinely exceed 144 strands per cabinet. Panduit's factory termination process includes end-face inspection and insertion loss testing, eliminating the field labor and variability associated with hand-polished connectors while guaranteeing performance that meets TIA-604-10 (FOCIS-10) geometry specifications for reliable mating with transceiver modules.

The unterminated rear design differentiates this cassette from pre-connectorized trunk assemblies and addresses the realities of permanent datacenter installations where backbone cable enters through overhead cable tray, underfloor conduit, or perimeter pathways. Rather than forcing installers to pull fragile pre-terminated assemblies through long conduit runs—risking connector damage and exceeding maximum pull tension—the FSUYPXRNNNNF050 allows fusion splicing of the cassette tails to incoming trunk cable after the cable is safely in place. This approach is standard practice in telecom central offices and carrier-grade datacenters, where mechanical splice trays or fusion splice closures permanently join distribution cable to equipment-side pigtails. For installations requiring field termination instead of splicing, the unterminated tails accept standard 900-micron tight-buffer termination using epoxy-polish or mechanical splice connectors, though this method introduces additional labor and test requirements compared to factory LC terminations. The 50-meter cassette length (approximately 164 feet) provides sufficient slack for routing to splice trays mounted in adjacent cabinets or overhead cable management zones, and the black jacket color matches standard OM4 trunk cable for easy visual identification during maintenance. Plenum rating ensures compliance with NEC Article 770.113, which mandates low-smoke, flame-retardant jacket materials for cables installed in environmental air spaces—typical in raised-floor datacenters and above-ceiling horizontal pathways where HVAC return air flows through the same space as network cabling.

Front-access architecture eliminates the need to reach behind populated equipment racks to add or change fiber patch cords, a design requirement in high-density rows where cabinets are positioned back-to-back with minimal clearance or against walls. The FlexCore cassette mounts in Panduit's FAP (Front Access Patch) fiber enclosures or any standards-compliant 1U ODF chassis, with all 12 duplex LC ports accessible from the front panel for moves, adds, and changes without disrupting adjacent circuits or requiring a maintenance window to shift equipment. This operational advantage becomes critical in production environments running 24/7 SAN, HPC clusters, or spine-leaf networks where a single accidental disconnect can trigger failover events or application timeouts. Polycarbonate housing provides impact resistance and dimensional stability across the -40°C to +75°C operating range, and the integrated strain relief clamps prevent fiber bend radius violations at the cassette exit point—a common failure mode when installers over-tighten cable ties or exceed the 30mm minimum bend radius for OM4 fiber under tensile load. Compliance with ISO/IEC 11801 and ANSI/TIA-568-C.3 ensures interoperability with structured cabling systems designed to these standards, and support for IEEE 802.3 and ANSI T11.2 (Fiber Channel) specifications confirms suitability for both Ethernet and storage network applications. The FSUYPXRNNNNF050 ships as a single unit with UPC 61305683899, backed by Panduit's standard warranty and technical support resources for mission-critical datacenter deployments.