UGREEN Ethernet Cable Coupler Extender RJ45 (8P8C) CAT8 10Gbps

UGREEN Ethernet Cable Coupler Extender RJ45 (8P8C) CAT8 10Gbps is an inline network coupler designed to join or extend two terminated RJ45 Ethernet cables without re-terminating connector ends. Built to meet CAT8 performance parameters, this coupler supports up to 10 Gbps throughput and is intended for short-distance cable extensions where high bandwidth and low signal degradation are required. The compact form factor simplifies linking existing patch cords in home networks, offices, and data closet applications while preserving the cable category rating when used with compatible CAT8 or lower-category cables.

Advantages

This coupler provides a straightforward method to extend Ethernet runs without cutting and re-crimping cables, maintaining reliable electrical contact for 8P8C connectors. Its CAT8 compliance helps ensure minimized signal loss and consistent high-speed data transfer up to 10 Gbps when matched with appropriate cabling and network equipment. The device is compact and passive, requiring no power or configuration, and allows rapid installation in constrained spaces such as behind racks or inside equipment cabinets.

Suitable for

• Extending or joining short runs of Ethernet cable in home and small office LANs
• Temporary or permanent connections in server rooms and network closets
• Upgrading existing links to preserve higher-category cable performance without re-terminating
• Connecting patch cables behind switches, routers, or wall plates in tight spaces

Key specifications

• Connector type: RJ45 (8P8C) female to female
• Category compliance: CAT8
• Maximum supported throughput: up to 10 Gbps
• Signal preservation: designed for short-distance extensions to minimize attenuation
• Power requirements: passive, no external power needed
• Form factor: compact inline coupler suitable for tight installation spaces

How to use

Insert a terminated RJ45 plug from one Ethernet cable into one side of the coupler and insert the terminated plug from the second cable into the opposite side until each plug clicks into place. Ensure both cables and connected devices are powered off or configured for hot-plugging as appropriate for your network equipment; then restore power or network links. Verify link status LEDs on switches or network devices to confirm negotiated speed and connectivity. Use compatible CAT8 or lower-category cables to maintain expected performance.

Usage recommendations

For best results, use the coupler only for short extensions and with well-terminated cables. To achieve advertised data rates, pair the coupler with CAT8-rated cables and network devices that support 10 Gbps. Avoid placing the coupler where it will be exposed to moisture or mechanical strain on the cable ends; secure cables to reduce stress at the connection points.