Description The Arista QSFP-40G-SRBD compatible 40GBASE-SRBD module provides high-performance 40Gb/s connectivity over multimode fiber (MMF). Utilizing BiDi technology at wavelengths between 832nm and 918nm, it supports a reach of 100m (OM3) or 150m (OM4) via a duplex LC interface. This module allows for the direct reuse of existing 10G duplex MMF cabling for 40G upgrades, offering a cost-effective path to higher bandwidth.