Black Box FM820-R2

Overview

The Black Box FM820-R2 is a modular RJ45 splitter that converts one male RJ45 plug into four female RJ45 jacks, enabling multiple Ethernet devices to connect through a single network port. This device is designed to simplify network expansion without the need for additional switches or hubs, making it a practical choice for home offices, small businesses, or professional environments where space and cable management are important.

Its built-in circuit board ensures stable and reliable data transmission, maintaining clear and consistent network signals. The included 2.5-inch unshielded cable provides enough flexibility to fit into various setups, allowing easy integration with existing RJ45 cabling systems.

Key features

• Splits one RJ45 male connector into four RJ45 female jacks to expand network connectivity
• Integral circuit board maintains secure and stable connections for consistent data signals
• Compact 2.5-inch unshielded cable offers flexible placement within network setups
• Simple plug-and-play design that requires no additional power or configuration
• Replaces the earlier FM820 model with the same trusted performance and reliability

Key specs

• Connector type: 1 RJ45 male to 4 RJ45 female
• Cable length: 2.5 inches (unshielded)
• Device type: Modular RJ45 splitter
• Compatibility: Works with standard Ethernet RJ45 ports and cables

Connectivity and compatibility

This splitter works seamlessly with standard Ethernet devices that use RJ45 connectors, including computers, printers, network cameras, and other network-enabled equipment. It fits into existing Ethernet cabling systems without requiring special adapters or power sources, making it a straightforward solution for expanding network access points.

• Compatible with 10/100/1000 Mbps Ethernet networks
• Supports connection of multiple devices from a single Ethernet port
• Ideal for setups where additional network ports are needed without installing switches

Ideal uses and environments

The FM820-R2 is well suited to environments where network expansion is needed but space or budget constraints limit the use of additional switches or hubs. It works well in home offices, small business networks, and professional settings where multiple devices must share a single Ethernet connection. Its compact size and simple design make it easy to integrate into existing setups without clutter or complex installation.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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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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