Our OM4 (50/125) optic fibre cables are perfect if you require fast data transfer speeds or to connect devices over long distances. Fibre optic cables use light to transmit data, which makes them much faster than traditional copper cables. They are often used in data centres, telecommunication networks or to connect servers together.OM4 cables are a specific type of fibre optic cable, designed for use in high-bandwidth applications, best for extended high speed at up to 550m at 10Gbps. OM4 are duplex, meaning they allow two-way data transmission through the two fibres, one for transmitting and one for receiving. They are also multi-mode, meaning they have a larger core for multiple light paths.