We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Blue single-mode LC loopback with ceramic ferrule

Black Box Corporation

Black Box Corporation FOLB50S1-LC single-mode loopback 50 µm

SKU CH-RXEP-J165N MPN FOLB50S1-LC

Single-mode loopback with dual LC male connectors and 50 µm ceramic ferrules for fibre testing

  • ColorBlue
  • Single-mode loopback simplifies fibre link testing
  • LC male connectors plug directly into transceiver ports
  • Blue ceramic ferrules ensure precise core alignment
  • WEEE and RoHS certified for environmental compliance

Single-mode loopback for LC links

The Black Box Corporation FOLB50S1-LC is a single-mode fibre loopback with a blue ceramic ferrule. It provides a 50 µm core path for testing or isolating LC ports in network infrastructure. The unit ships new and carries WEEE and RoHS environmental certifications.

Lifetime warranty and ceramic ferrule

A lifetime limited warranty backs the build, while the ceramic ferrule resists wear during repeated insertions. The blue housing identifies the single-mode specification at a glance. Buyers who need multimode loopbacks or SC connectors cannot use this model.

Highlights

  • Single-mode loopback simplifies fibre link testing
  • LC male connectors plug directly into transceiver ports
  • Blue ceramic ferrules ensure precise core alignment
  • WEEE and RoHS certified for environmental compliance

Specifications

BrandBLACK BOX NETWORK SRV
ColorBlue
Shipping weight0.23 kg
Package size254 × 254 × 13 mm

Questions about this item

Does the LC connector on this single-mode loopback use a ceramic ferrule?

Yes, the LC connector features a ceramic ferrule for low-loss single-mode performance.

Is the blue housing on this loopback purely cosmetic or does it indicate a specific fibre type?

The blue housing identifies the connector as single-mode, matching industry colour coding for LC single-mode connectors.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.