OM2, OM3 or OM4 fibre cabling- What is the difference?

Fibre optic networks provide connectivity for long distance and very high bandwidth network communications. Deciding which standard of multi-mode cabling will be sufficient to meet your needs depends upon the length of the fibre optic connection that is required and the amount of data that you need to transmit.

OM1 cable will give you only a very basic fibre optic data link and is typically used to communicate across distances of around 100-275m.

OM2 will go slightly further, providing you with support for gigabit applications over a distance of anything up to around 550m.

OM3 multimode cabling can transmit data at the faster rate of 10 gigabit per second and can be used to support more complex applications than OM1 or OM2 cabling. OM3 will successfully transmit 10G of data across a distance of around 300m.

OM4 cabling improves further still on OM3 because it is capable of transmitting 10GB across a distance of 550m. OM4 cables can also be used to send ultra-fast 100GB signals over short distances of around 125m.

Deemrose Data Cabling

Deemrose Data Cabling of New Milton, Hampshire install, terminate and test multi-mode fibre optic cabling across Dorset, Hampshire and the UK. For more information please visit the Deemrose Data Cabling website.


Cat 5e, Network Cabling and Data Cabling in Dorset and Hampshire

About Us

Deemrose Data Cabling rosewas formed in 1983. We specialise in the installation of structured cabling, both fibre optic cabling and UTP data cabling and the provision of server and communications rooms. Our highly skilled data cabling installation teams use their expert knowledge of copper and fibre optic network cabling to make alterations to live working environments, including that of listed buildings. Our inclusion on both Dorset County Council & Hampshire County Council’s list of approved contractors is testament to the quality of our work and to the quality of our organisation.

quality system

ISO 9001Deemrose Data Cabling operate a document quality system currently certified to BS EN 9001 : 2008. We have continuously held ISO 9000 registration since 1994, a certification that was awarded to us by National Quality Assurance.

trade accreditations

We are approved by Constructionline, an organisation part owned and endorsed by the Department for Business, Enterprise and Regulatory Reform (BERR). We are also included in the UK Register of Pre-Qualified Construction Services providers.


ConnectixDeemrose Data Cabling are a network cabling and computer cabling company based near the New Forest and we carry out Cat 5e copper and fibre optic installations in Dorset, in Hampshire and in the UK. We have Approved Installer status from Connectix Limited, a major UK supplier of data cabling solutions. As a Connectix-approved Installer we are able to provide lifetime warranties on every Connectix data cabling network that we install. The warranties that we issue are underwritten by Connectix themselves.

For more information on data cabling installations or fibre optic cabling installations in Dorset, Hampshire or in the UK then please visit