Many US data centers want to increase bandwidth but prefer not to replace existing fiber infrastructure. The QSFP-40G-SR-BD module is Cisco’s short range bidirectional 40 Gigabit transceiver designed to deliver high speed connectivity over standard duplex multimode fiber. It allows organizations to move to 40G while continuing to use their current LC fiber cabling.

How the QSFP-40G-SR-BD Module Operates

The QSFP-40G-SR-BD uses bidirectional optics to transmit and receive signals over two strands of multimode fiber instead of parallel MPO connections. This approach simplifies cabling, reduces installation effort, and makes 40G upgrades easier to manage in existing environments.

• BiDirectional Technology: Sends and receives data over duplex multimode fiber.
• Short Range 40G Reach: Supports distances up to 100 meters on OM4 fiber.
• LC Duplex Interface: Works with existing MMF patching and connectors.
• Infrastructure Friendly Design: Eliminates the need for MPO cabling.
• Efficient Power Usage: Designed for stable operation in dense switch environments.

Why US Organizations Choose QSFP-40G-SR-BD

Many enterprises want higher bandwidth without the cost and complexity of re cabling data centers. The QSFP-40G-SR-BD makes this possible by delivering 40G performance over the same duplex fiber used for 10G links.

At ORM Systems, this module is often selected by customers upgrading switch uplinks or aggregation layers while keeping fiber changes to a minimum.

Ideal Use Cases for QSFP-40G-SR-BD

• Data center upgrades from 10G to 40G using existing MMF
• Enterprise aggregation and distribution layer links
• High density environments where cabling simplicity matters
• Short distance 40G fiber deployments
• Cost efficient bandwidth expansion projects

The Takeaway

The QSFP-40G-SR-BD module delivers reliable short range 40G connectivity for US organizations that want higher speeds without major cabling changes. Its bidirectional design, strong Cisco compatibility, and efficient operation make it a practical solution for modern network upgrades.

If your network needs to scale bandwidth while preserving existing multimode fiber, this module is a smart and efficient choice.