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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.

Description

Black Box LGC121A-R4 Gigabit Ethernet Media Converter

Overview

The Black Box LGC121A-R4 is a Gigabit Ethernet media converter designed to extend network reach beyond the standard 100-meter limit of copper Ethernet. It facilitates the conversion between 1000BASE-T copper Ethernet and 1000BASE-SX multimode fiber optic signals, enabling network infrastructure to span distances up to 550 meters. This device is critical for connecting network segments in large facilities, campus environments, or when bridging distances between buildings where fiber optic cabling is the only viable option for high-speed data transmission. Deploy this converter to integrate fiber optic backbone cabling with existing copper Ethernet switches or devices, ensuring reliable gigabit connectivity over extended ranges.

Compatibility

This media converter is designed to interface with standard 1000BASE-T Ethernet ports found on most network switches, routers, and end devices. It supports 1000BASE-SX multimode fiber optic connections using an SC connector, making it compatible with a wide array of multimode fiber patch panels and transceivers. It functions as a transparent bridge, meaning it does not require specific software or configuration beyond basic physical connection, ensuring broad compatibility with various network protocols and equipment from different manufacturers.

Installation Notes

Ensure the correct fiber optic cable type (multimode) and connector (SC) are used for the 1000BASE-SX port. Verify that the distance requirement does not exceed the 550-meter specification for multimode fiber. The device operates via an external power adapter (sold separately), so ensure appropriate power is available at the installation site. Connect the copper Ethernet port to a standard RJ-45 network cable and the fiber port to the corresponding fiber optic cable.

What's in the Box

  • 1x LGC121A-R4 Media Converter
Specifications
Brand: Black Box
MPN: LGC121A-R4
Type: Power Supply
Color: Black
Connectivity: Ethernet
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Black Box Gigabit Ethernet (1000-MBPS) Media Conve - LGC121A-R4

$668.52
$516.99

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