Fibre optic cable EFB Elektronik LC-ST 50/125µ InfiniBand 20 m

The EFB Elektronik LC-ST 50/125µ InfiniBand 20 m fibre optic cable is a multimode OM4 cable with a 50 µm core diameter designed for high-speed, full-duplex data transmission. At 20 meters in length it connects devices with LC and ST terminations, providing a combination of compact LC and bayonet-style ST connectors suitable for mixed network equipment. The cable is intended for use in environments where reliable optical links and low signal attenuation are required for InfiniBand and other high-bandwidth networks.

Advantages

This OM4 multimode fibre offers improved bandwidth and lower modal dispersion compared with lower-grade multimode fibres, enabling higher data rates over the 20 m run. The combination of LC and ST connectors allows compatibility with equipment that uses different connector types without additional adapters. The full-duplex design supports simultaneous two-way communication, and the 50 µm core supports standard multimode infrastructure and transceiver modules used in InfiniBand and related systems.

Suitable for

• InfiniBand links between switches, servers, and HBA cards
• High-speed data center interconnects and rack-to-rack connections
• Multimode optical links in laboratory and test environments
• Connections requiring a mix of LC and ST terminations

Key specifications

• Fibre type: OM4 multimode
• Core diameter: 50 µm
• Length: 20 m
• Connector types: LC (one end) and ST (other end)
• Transmission mode: Full duplex
• Typical use: Short to mid-range high-bandwidth optical links

How to use

Inspect both LC and ST connectors and the transceiver ports for dust or damage before installation. Align the LC connector with the LC port and insert until it clicks; align the ST connector with the ST socket and insert, then twist the bayonet ring to lock. Ensure that the connected devices are powered down or their ports are set to accept a hot-plugged optical link according to device guidance. After connection, verify link status and data rate using the host equipment or network management tools.

Recommendations

Handle the fibre cable by its jacket; avoid tight bends and keep the bend radius above the manufacturer-recommended minimum to prevent increased attenuation. Use dust caps when connectors are not in use and clean connector endfaces with appropriate fibre cleaning tools before mating. For critical installations, test end-to-end performance and document link parameters after installation.