Networking Cable EFB Elektronik K5528GN.3 RJ-45 Cat8.1 3 m Green

The EFB Elektronik K5528GN.3 networking cable is a 3 m RJ-45 patch cable built to Cat8.1 (S/FTP) standard. It supports 25GBASE-T and 40GBASE-T applications with a frequency range up to 2000 MHz and is specified for a maximum transmission distance of 30 m. The cable delivers high data rates — up to 40000 Mbit/s — and comes in a green jacket with RJ-45 connectors on both ends.

Advantages

The Cat8.1 S/FTP construction provides improved shielding against electromagnetic interference and crosstalk compared with lower-category cables. High bandwidth (up to 2000 MHz) and support for 25GBASE-T/40GBASE-T make the cable suitable for demanding network links. The 3 m length is convenient for short patching runs in racks and workstations.

Suitable for

• Short-distance server-to-switch connections (up to 30 m)
• High-speed workstations and network appliances
• Data centre patching and aggregation links
• Environments requiring shielded RJ-45 connections

Key specifications

• Standard: Cat8.1 (S/FTP)
• Length: 3 m
• Connectors: RJ-45 to RJ-45
• Supported applications: 25GBASE-T, 40GBASE-T
• Bandwidth/frequency: up to 2000 MHz
• Maximum recommended transmission distance: 30 m
• Data rate: up to 40000 Mbit/s
• Colour: Green

How to use

Connect the RJ-45 plugs to compatible RJ-45 ports on switches, routers, servers, or network devices. Ensure both ends are fully inserted until the connector latch clicks. Use for point-to-point links within the specified maximum distance (30 m) and avoid tight bends or crushing that could damage the shielding and degrade performance.

Recommendations

For best performance, use the cable in shielded environments and ensure connected equipment supports 25GBASE-T or 40GBASE-T. Maintain a bend radius consistent with manufacturer guidelines and avoid running the cable in parallel with high-voltage power lines to reduce interference.