Black Box LHC021A

Overview

The Black Box LHC021A is a 3-foot adapter cable designed to power compatible Black Box Fast Ethernet media converters by drawing five volts directly from a USB Type A port. This cable eliminates the need for a separate wall adapter, helping to reduce clutter and simplify setups in racks, desktops, or travel kits. It connects a USB Type A male plug to the barrel connector used by Black Box Multipower Miniature Media Converters, providing a reliable power source without requiring any configuration or drivers.

Key features

• Provides power to Fast Ethernet media converters directly from a USB port, removing the need for an AC adapter
• Three-foot length offers flexibility for placement on rack shelves, desktops, or inside carrying cases
• Compatible with select Black Box media converters, ensuring tested and reliable operation
• Supports power sharing with host devices, allowing media converters to benefit from uninterruptible power supplies connected to the host
• Simple plug-and-play design requires no additional setup or drivers

Key specs

• Cable length: 3 feet
• Input connector: USB Type A male
• Output connector: Barrel connector for Black Box Multipower Miniature Media Converters
• Power output: 5 volts DC
• Compatible devices: Select Black Box Fast Ethernet media converters

Connectivity and compatibility

This adapter cable connects a standard USB Type A port from a laptop, desktop, or USB power supply to the barrel power input of compatible Black Box media converters. It is designed specifically for Black Box Multipower Miniature Media Converters, ensuring a secure and reliable power connection. By drawing power from USB, it fits well in environments where AC outlets are limited or where reducing cable clutter is a priority.

Ideal uses and environments

The LHC021A cable is well suited for network engineers who frequently move equipment between sites, event crews setting up temporary network links, and IT administrators aiming to conserve power outlets in rack installations. It also works effectively in portable troubleshooting kits, making it easier to power media converters alongside laptops or other USB-powered devices. This cable supports setups where maintaining network uptime is critical by leveraging the host device’s power protection.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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