
The Cisco QSFP-40/100-SRBD is a short-reach QSFP transceiver module that supports both 40G and 100G Ethernet connectivity over duplex multimode fiber (MMF). Using bidirectional optics, it enables high-speed data transfer up to 100 meters with OM4 fiber. The module features a duplex LC connector and supports breakout configurations such as 4x 25G lanes. Ideal for data centers and enterprise core networks, it combines flexibility, performance, and efficient use of existing MMF cabling infrastructure.