Patchcord LAN Extralink Kat.8.1 S/FTP 3 m 40G Blue - copper twisted-pair cable (EX.38855)

The Extralink Cat.8.1 S/FTP 3 m patchcord is a 3-meter copper twisted-pair LAN cable designed for high-speed Ethernet links up to 40 Gb/s. Constructed with individual pair shielding plus an overall shield (S/FTP), this blue patchcord reduces electromagnetic interference and crosstalk, ensuring stable connections in dense installations such as data centers, server racks and professional network closets. The cable uses four pure copper pairs and shielded gold-plated RJ45 connectors to support reliable data transmission and power delivery over PoE-capable networks.

Advantages

Cat.8.1 S/FTP construction provides superior protection against external interference and pair-to-pair crosstalk compared with lower-category cables. The higher supported frequency range and 40 Gb/s capability make the cable suitable for short, high-performance links and backbone patching where reduced latency and consistent throughput are required. Shielded connectors and pure copper conductors ensure low signal loss and compatibility with PoE devices, while the 3 m length is convenient for rack-to-rack or device-to-switch connections in compact installations.

Suitable for

• Data center patching and switch interconnects
• High-bandwidth workstations and servers
• Server racks, network cabinets and top-of-rack connections
• Environments with high electromagnetic interference

Key specifications

• Category: Cat.8.1
• Shielding: S/FTP (shielded foil around each pair + overall shield)
• Length: 3 meters
• Maximum throughput: up to 40 Gb/s
• Conductor: four pure copper twisted pairs
• Connector type: shielded RJ45 with gold-plated contacts
• Supports Power over Ethernet (PoE)

How to use

Connect one end of the patchcord to the RJ45 port of a switch, patch panel or network device and the other end to the corresponding port of the target device, ensuring the shielded connectors make proper contact with the equipment’s chassis or shielded jack. Use straight-through wiring ports for standard Ethernet links and confirm port settings on connected devices to match required speeds and duplex modes. Avoid sharp bends and maintain recommended bend radius to preserve shielding and conductor integrity.

Recommendations

For best performance, route the Cat.8.1 S/FTP patchcord away from high-voltage power lines and strong EMI sources, and avoid bundling with unshielded cables. Verify that connected equipment supports 40 Gb/s or the intended link speed; when used within rack environments, ensure proper grounding of patch panels and shields to maximize EMC benefits.