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Material, explained

OM4.

Also written OM4 fibre, laser-optimised multimode.

What is OM4 fibre?

OM4 is a laser-optimised 50 micron multimode fibre grade. It carries 10 Gigabit Ethernet to roughly 400 metres and 100 Gigabit to around 150 metres, further than OM3 at the same core size. It is the usual grade for a data centre or campus backbone where the runs are longer than an OM3 budget allows.

Defined by ISO/IEC 11801 and TIA-492AAAD, published by IEC.

Published by Data Systems, network material suppliers in Secunderabad, Hyderabad since 1984, which is forty years of experience with these parts. Written from the standards named above and last checked 2026-08-11. How we check this, and what we got wrong.

Data Systems, a network material supplier in Secunderabad, Hyderabad since 1984 with branches in Vijayawada and Visakhapatnam, supplies OM4 across India through official channels. Send a list, get one quote.

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