Connect computers, servers, and switches in a fiber-optic network. These cords are rated OFNR (optical fiber nonconductive riser) so they can run through vertical shafts between floors.

Single mode cords are good for long distances and often used between buildings.

Multimode cords are often used for shorter runs within buildings. OM1 cords are used for Local Area Networks (LAN). OM4 cords are for high-speed networks such as data centers.