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The Black BoxLMC1003A-R3 is a versatile modular Media converter ideal for extending 10/100/1000Base-T networks across multimode fiber up to 220 meters (≈721 ft). With one RJ-45 copper port and an SC duplex 1000Base-SX multimode fiber port (850 nm), this standalone converter enables fast LAN extension without fiber NICs. Built for flexibility, it can be deployed individually or mounted in FlexPoint chassis modules for scalable network growth in enterprise, campus, or industrial environments
The modular architecture allows wall, rack, or DIN-rail mounting and simple integration into chassis-based systems as your infrastructure evolves. With link pass-through detection, LED diagnostics, auto-MDI/MDI-X, and optional SNMP monitoring, the LMC1003A-R3 delivers reliability and visibility across growing fiber backbone networks
Diagnostic LEDs aid in rapid troubleshooting, and chassis integration adds redundant power and centralized management. The Double Diamond' warranty further protects against accidental damage and ensures swift repair or replacement.
1 Gbps conversion between copper (RJ-45) and multimode fiber (SC, 850 nm)
Maximum fiber distance up to 220 meters (≈722 ft)
Auto-MDI/MDI-X and manual DIP-switch port configuration
Diagnostic LEDs for power, link, and activity status
Compatible with FlexPoint chassis or standalone wall/DIN-rail installation
The FlexPoint LMC1003A-R3 is engineered for consistent operation in mission-critical networks. Its rugged housing and broad temperature tolerance support deployment in demanding enterprise or industrial settings. With automatic crossover detection (MDI/MDI-X) and protocol transparency, it operates seamlessly in diverse network layouts.
10/100/1000Base-T copper port (RJ-45)
1000Base-SX multimode fiber port (SC, 850 nm)
Up to 220 m fiber reach
Auto-MDI/MDI-X crossover support
Status LEDs (Power, Link, Activity)
Wall, rack, or DIN-rail mountable
Module-compatible for FlexPoint chassis
Manual DIP switch settings
Optional chassis power redundancy
TAA compliant
| Specification | Details |
|---|---|
| Model Number | LMC1003A-R3 |
| Product Type | Media converter |
| Copper Port | RJ-45, 10/100/1000Base-T, Auto-MDI/MDI-X |
| Fiber Port | SC Duplex, 1000Base-SX (850 nm multimode) |
| Max Fiber Distance | ~220 m (721 ft) over multimode fiber |
| Link Fault Detection | Yes |
| LEDs | Power, Link, Activity |
| Mounting Options | Standalone, Wall-mount, DIN-rail, FlexPoint Chassis |
| Power Source | External AC adaptor or chassis power |
| DIP Switch Options | Port mode override control |
| Warranty | 1-Year Double Diamond' (repair/replacement) |
| Operating Temperature | 0 °C to 50 °C |
| Form Factor | 1" × 3" × 4" (~2.5 × 7.6 × 10.2 cm), ~0.4 lb |
| Compliance | FCC, UL, RoHS, TAA (when in chassis deployment) |

All packages are shipped same day if the order is placed before 3PM CST
We use UPS/FedEx to ship the packages with different service levels offered by UPS/FedEx
Overnight Shipping take 1 business day
Expedited Shipping take about 2-3 business days
Ground shipping take about 3-5 business days
You can select the desired service level at Checkout and we will make sure the package is shipped as per the selected service level.
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Call: 469.458.9636
Email: sales@dcsupplies.net
If you have any queries, please contact us at the following details and we will be happy to help
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469.458.9636
469.458.9638
Email
sales@dcsupplies.net
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Black Box LMC1003A-R3 Flexpoint Modular Media Converter, Gigabit
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