Low-Smoke Zero-Halogen (LSZH) Fibre Optic Patch Jumpers from Cables To Go are designed to lessen the emissions of smoke and halogens when the cable is exposed to extreme temperatures. These fibre patch jumpers are perfect for Fast Ethernet, Fibre Channel, ATM and Gigabit Ethernet applications. Use to connect fibre optic equipment to fibre optic cross-connects, Cables and information outlets. Each cable is individually 100% optically inspected and tested for insertion loss and quality. All cables meet or exceed industry specifications.