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Black Box LMC212A-MM-R3 media converter, compact metal enclosure, RJ45 and ST ports

Black Box Corporation

Black Box Corporation LMC212A-MM-R3 SFP transceiver 10Base-T 10Base-FL 1.24 mile

SKU CH-HNH2-1WK62 MPN LMC212A-MM-R3

Converts 10Base-T to 10Base-FL over 1.24 miles using one RJ-45 and one ST port

  • Converts 10Base-T to 10Base-FL for fibre uplinks
  • Extends network reach up to 1.24 miles over multimode fibre
  • Two-port design links one RJ-45 and one ST connector
  • Compact external module fits rack or desktop deployment
  • Weighs only 7.05 oz for lightweight installation

Media converter with ST and RJ-45 ports

The Black Box LMC212A-MM-R3 is an external FlexPoint Ethernet media converter that provides one RJ-45 port and one ST fibre port. It bridges 10Base-T copper networks to 10Base-FL multimode fibre links. The unit operates as a standalone device or can be installed in a compatible chassis for rack-mount expansion.

Suitable for extending legacy 10 Mbps segments

This converter suits administrators who need to connect a single 10Base-T device to a 10Base-FL backbone up to 1.24 mile away. It is not for networks requiring Fast Ethernet, Gigabit speeds or modern SFP-based connectivity. Buyers needing higher bandwidth or different fibre connectors should look at other products.

Maximum fibre distance of 1.24 mile on 10Base-FL

The defining specification is the 1.24 mile reach over multimode fibre using the ST interface at 10 Mbps. This distance limit determines whether the converter can span the required link between buildings or cabinets. Verify that your fibre plant and speed requirements match this capability before purchasing.

Highlights

  • Converts 10Base-T to 10Base-FL for fibre uplinks
  • Extends network reach up to 1.24 miles over multimode fibre
  • Two-port design links one RJ-45 and one ST connector
  • Compact external module fits rack or desktop deployment
  • Weighs only 7.05 oz for lightweight installation

Specifications

BrandBLACK BOX
Shipping weight0.59 kg
Package size201 × 178 × 64 mm

Questions about this item

Will the 3-inch wide, 4-inch deep external chassis fit on my rack shelf?

The unit measures 3 inches wide by 4 inches deep and 1 inch high, so it occupies a single rack unit on any standard shelf.

How do I install the FlexPoint LMC212A-MM-R3 and what step is often missed?

Connect the RJ-45 port to copper and the ST port to multimode fibre, then power the external adapter; the step often missed is verifying the 1.24-mile fibre link light before closing the rack.

When will the 7.05 oz converter need maintenance or replacement?

The media converter has no moving parts or user-serviceable components; plan replacement only if the RJ-45 or ST port fails after extended service.

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