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Ultra-compact copper-to-fiber media converter with RJ-45 and ST ports

Black Box Corporation

Black Box Corporation LMC401A 10/100/1000 Copper to 100 Mbps ST Media Converter

SKU CH-D0TR-CDKNM MPN LMC401A

Converts 10/100/1000 copper to 100 Mbps multimode ST fiber up to 3.11 miles, USB-powered and pocket-sized at 2.5 ounces

  • TypeOthers
  • Ultra-compact design fits in a pocket
  • USB-powered operation enables fiber links without AC or DC power
  • 10/100/1000 copper auto-negotiates speed and duplex
  • ST duplex connector supports multimode fiber at 1310 nm
  • Extends network up to 3.11 miles over fiber

Compact copper-to-fiber converter

The Black Box LMC401A converts a 10/100/1000 Mbps copper link to a 100 Mbps multimode fiber connection using an ST duplex port. Weighing 2.5 ounces and roughly the length of a house key, it fits in a pocket or laptop case for field deployments. It draws power from a USB port, so no external adapter is required. The RJ-45 port autonegotiates speed, duplex and crossover automatically.

100 Mbps fiber ceiling

The fiber side is fixed at 100 Mbps, so the converter cannot pass gigabit traffic across the optical segment. It handles 10, 100 and 1000 Mbps on copper but caps throughput at the fiber line rate. Maximum reach is 3.11 miles over multimode fiber at 1310 nm wavelength. This makes it suitable for desktop fiber drops or temporary links where gigabit fiber is not needed.

USB-powered operation

A single USB connection supplies all operating power, eliminating the need for AC or DC outlets at the remote end. This is the deciding factor for mobile or ad-hoc installations where mains power is unavailable. If your site can provide a USB port, the converter works immediately; otherwise an external USB power source must be arranged.

Points forts

  • Ultra-compact design fits in a pocket
  • USB-powered operation enables fiber links without AC or DC power
  • 10/100/1000 copper auto-negotiates speed and duplex
  • ST duplex connector supports multimode fiber at 1310 nm
  • Extends network up to 3.11 miles over fiber

Caractéristiques

BrandBLACK BOX
TypeOthers
Poids d’expédition0.20 kg
Dimensions du colis193 × 104 × 38 mm

Questions sur cet article

Will the RJ-45 port on the LMC401A automatically adjust to my older 10 Mbps or 100 Mbps network equipment?

Yes, the RJ-45 port autonegotiates speed and duplex for 10BASE-T, 100BASE-TX, and 1000BASE-T connections, so it works with legacy copper gear.

How can I verify the LMC401A is converting signals correctly once connected?

Check that the link LEDs on both the RJ-45 and ST ports show active connections; the copper side should negotiate 1000, 100, or 10 Mbps and the fiber side runs at 100 Mbps over 1310 nm multimode up to 3.11 miles.

Does the LMC401A package include the ST fiber patch cord and USB power cable, or must I buy them separately?

The converter provides one RJ-45 port and one duplex ST port for multimode fiber; fiber patch cords and a USB power source are not included and must be sourced separately.

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