Good Connections OS2 Fibre Patch Cable LC/UPC to SC/UPC Duplex 9/125 µm Single-Mode, 5m, LSZH, Yellow

The Good Connections LW-905LS is a 5 m duplex OS2 single-mode fibre optic patch cable (9/125 µm) with LC/UPC on one end and SC/UPC on the other, for single-mode optics such as 1000BASE-LX or 10GBASE-LR SFP/SFP+ transceivers, media converters and single-mode patch panels.

The yellow 2.0 mm jacket is LSZH (low smoke, zero halogen), with a minimum bend radius of 15 mm. Every cable is tested and shipped with its own measurement report. OS2 is the current single-mode grade (9/125 µm). It is the choice for runs between floors or buildings, carrier and FTTH connections, and any LX/LR/ER-type optics; the reach is set by the transceiver, not by this short patch cord.

• 1 × Good Connections OS2 duplex patch cable, LC/UPC to SC/UPC, 5 m
• Dust caps on the connectors
• Individual test / measurement report
• No couplers, adapters or transceivers are included

• Duplex = two fibres, one to transmit and one to receive. A standard SFP/SFP+ module uses both, so one duplex cable makes one link.
• Mixed connectors: LC (small, latching) — fits SFP/SFP+ modules and high-density panels; SC (larger, push-pull) — common on older switches, media converters, fibre wall outlets and FTTH gear. This cable bridges the two directly, without a coupler.
• If the link shows no light, the duplex clip can be opened to swap polarity (A/B) — no re-termination needed.
• Jacket colour follows the usual convention (yellow single-mode, aqua OM3, violet OM4, lime OM5), so the cable is easy to identify later in the rack.

• Multimode SR transceivers or multimode (aqua/violet/lime) cabling — mixing single-mode and multimode fails or gives an unstable link.
• APC (green) ports — many FTTH/GPON ONTs and fibre wall outlets use SC/APC.
• Ports other than LC and SC (e.g. ST, MPO/MTP, FC) — use the matching cable or a suitable coupler.
• It is a passive cable: it does not turn an RJ45 copper port into fibre — that needs an SFP module or a media converter.