Panduit FS2EPKDKDNDM003 Opti-Core OM4+ 2-Fiber Duplex LC Patch Cord

The Panduit FS2EPKDKDNDM003 is a 3-meter duplex LC fiber optic patch cord engineered for high-speed datacenter and enterprise backbone installations where physical layer security and OFNP plenum compliance are mandatory. Built on Panduit's Signature Core OM4+ fiber, this 2-fiber jumper delivers ultra-low insertion loss across 40GBASE-SR4 and 100GBASE-SR4 Ethernet links. The defining feature is D-code keyed LC connectors—yellow-bodied coded duplex terminators that physically prevent mismating with standard (non-coded) LC ports, adding a critical layer of install discipline in mixed-infrastructure environments. The 1.6mm zipcord jacket is OFNP rated for unrestricted plenum routing and color-coded yellow per TIA-598 OM4 convention.

Key Features

• D-Code Keyed Duplex LC Connectors — Yellow-bodied coded terminators mate only with matching D-key adapters, preventing accidental cross-connection to non-coded infrastructure or wrong fiber types
• OM4+ Signature Core Fiber — Enhanced laser-optimized 50/125µm multimode fiber supporting 40G/100G Ethernet to 150m and 10G to 550m with headroom over standard OM4 specs
• OFNP Plenum Rated — UL-listed for installation in air-handling spaces without additional conduit, meeting NEC Article 770 plenum cable requirements
• Ultra-Low Insertion Loss — Factory-terminated and tested LC connectors deliver <0.30 dB typical IL, preserving link budget on congested patch panels
• 3-Meter Rack-to-Rack Length — Optimized for cross-connect, equipment-to-patch-panel, or adjacent-rack connections without excess slack
• Yellow TIA-598 Color Coding — Jacket and connector bodies follow industry-standard OM4 identification for at-a-glance fiber type verification

Panduit's Opti-Core line addresses the physical layer security gap in enterprise and datacenter fiber deployments. Standard LC connectors are universal—any LC plug mates with any LC adapter—which creates risk when OM3, OM4, and OS2 fibers share the same rack or cross-connect field. The D-code keying system solves this by machining a D-shaped cutout into both the duplex LC connector body and the mating adapter. Non-coded (round) LC plugs physically cannot insert into a D-keyed adapter, and D-keyed plugs cannot insert into standard round adapters. This enforces fiber-type segregation at the mechanical layer, independent of jacket color or labeling. In the FS2EPKDKDNDM003, both ends carry yellow D-coded LC duplex connectors, designed to mate exclusively with Panduit's yellow D-coded adapter panels. The underlying fiber is Signature Core OM4+, Panduit's enhanced-bandwidth 50/125µm laser-optimized multimode glass that exceeds standard OM4 Modal Bandwidth specifications—2470 MHz·km minimum at 850nm versus the 4700 MHz·km typical for Signature Core. This headroom translates to longer reach on 40GBASE-SR4 (150m vs. 100m baseline) and extended 10GBASE-SR links beyond 400m, preserving upgrade paths as switch port speeds increase. The cable assembly uses a 1.6mm zipcord construction—two 900µm buffered fibers in a figure-8 cross-section—rated OFNP for unrestricted plenum installation. Factory termination and individual insertion-loss testing ensure each jumper ships with <0.30 dB typical IL, a critical spec when patch panels carry 20+ connections in series.

This patch cord targets environments where fiber infrastructure must enforce physical separation between dissimilar media types—datacenter cross-connects serving 10G/40G/100G leaf-spine fabrics, enterprise telecom rooms with mixed OM3/OM4/OS2 backbones, or secure facilities where MAC-layer and physical-layer access controls converge. A typical use case is a Cisco Nexus or Arista leaf switch deployment: OM4+ D-coded patch panels in the rack, FS2EPKDKDNDM003 jumpers from panel to switch QSFP+ breakout modules, and color-matched yellow trunk cables to the spine tier. The keying prevents a field technician from inadvertently patching a 1G SFP (expecting OS2 singlemode) into an OM4 port, or mixing OM3 and OM4 links on the same switch—mistakes that cause intermittent errors or sub-spec performance. The 3-meter length covers front-of-rack to mid-rack patch panels, adjacent-rack cross-connects, or top-of-rack switch to cable-management vertical runs without the coil-and-tie discipline required by 5m or 10m jumpers. OFNP plenum rating allows the cable to route through overhead cable trays, under-floor plenums, or any NEC Article 770-governed air-handling space, eliminating the need for metallic conduit and simplifying MACs (moves, adds, changes) in occupied floors.

The FS2EPKDKDNDM003 ships as a single patch cord in Panduit retail packaging (carton quantity 10 for bulk orders). It meets RoHS directive requirements for lead-free and restricted-substance compliance, a baseline for federal and large-enterprise procurement. The duplex LC form factor is the de facto standard for 10G/40G/100G multimode Ethernet—ubiquitous on enterprise switches, media converters, and SFP+/QSFP+ transceivers—so the coded-connector upgrade path requires only swapping out standard LC adapters for Panduit's D-keyed variants on existing patch panels. For integrators managing mixed-generation fiber plants, or datacenter operators enforcing strict change-control on backbone links, the D-code keying system delivers a tangible reduction in human-error downtime while preserving full OM4+ bandwidth and plenum compliance. When physical layer discipline is part of your security or operational posture, Panduit's coded-connector ecosystem is the established choice.