StarTech.com 5m (16.4ft) LC to LC (UPC) OS2 Single Mode Simplex Fiber Optic Cable, 9/125µm, 40G/100G, Bend Insensitive, Low Insertion Loss - LSZH Fiber Jumper Cord

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For £15.10 ex-VAT for a 5m LC-to-LC OS2 simplex lead, this looks like a sensible “just make it work” jumper for anyone building/patching single-mode fibre links in a comms room—especially when you want decent signal performance without paying silly money. The OS2 + LC combination is the common pairing in most modern racks, and at this length you’re typically using it between patch panels, active gear and patch bays. The bend-insensitive/low-loss angle is genuinely useful in the real world too: it’s not going to rescue sloppy routing, but it helps when you’re dressing cables tightly in crowded cabinets.

That said, I’d be cautious about two things. First, make sure you actually need simplex (one strand) rather than duplex—this kind of cable is fine for one-way links but will be the wrong choice if your deployment expects a two-fibre Tx/Rx pair. Second, don’t assume “40G/100G” means you’ll be automatically covered for every distance and transceiver combination—short patch runs are usually fine, but your optics and link design still dictate what’s valid. If you need lots of patch cords, it’s a good price/performance bet; if you’re doing anything finicky with optics budgets or cable management is likely to be brutal, I’d still spend a bit more to match the exact patching spec your environment expects.