OM4 is backwards compatible with OM3 Fibre optic. Fibre patch cables are thin, flexible fibres of glass that carry data, telephone conversations and emails high speed all over the world in a matter of seconds with much less interference than copper patch lead. Fibre Optic cables need less amplification to boost signals so they travel better over longer distances. 4Cabling ‘s OM4 laser optimised multimode fibre optic patch leads are immune to EMI/ RFI frequency, The multimode optical fibre cables are manufactured using LSZH cables which conform to IEC, EIA TIA and Telcordia standards, ensuring minimal toxic gas emission in the event of a fire, this is often a requirement for many data centres and critical area applications. LSZH (Low Smoke Zero Halogen) sometimes referred to as LS0H is the material of choice for a green installation for the environmentally-conscious consumer. 4Cabling Multimode Fibre Optics leads provide a cost-effective solution for your cabling requirements.