Cisco Qsfp40G Bidi Short Reach Transceiver Remanufactured

Introducing the Cisco QSFP40G BiDi Short-reach Transceiver — a high-density, hot-swappable 40GBASE-X module engineered for data networking and optical networks. This BiDi transceiver delivers reliable 40 Gbps performance over duplex multimode fiber, enabling efficient, scalable connectivity for data centers, enterprise campuses, and telecom edge deployments. Built for seamless integration with Cisco switches and select third-party devices, it maximizes cable efficiency, minimizes footprint, and supports rapid deployment without compromising reliability or uptime. Designed to meet the demands of modern networks, this transceiver ensures consistent, low-latency 40 Gigabit Ethernet over short-reach links, while reducing cabling complexity and patching labor in dense rack environments.

• High-density 40GBASE-X for scalable data center networks: The QSFP40G BiDi transceiver enables compact, high-bandwidth connectivity in data centers and campus networks, delivering sustained 40 Gbps Ethernet over short-reach links with low latency and minimal packet loss. Its quad form-factor fits multiple ports per switch, helping you maximize port density and optimize rack space.
• Bidirectional BiDi technology over duplex MMF: This module uses bidirectional signaling over a single fiber pair, dramatically reducing fiber plant complexity. By leveraging two wavelengths on the same duplex multimode fiber, it preserves full-duplex performance while cutting fiber count and patch cord tangles, simplifying deployment and maintenance.
• 50 µm multimode fiber compatibility with LC duplex interface: The transceiver is optimized for short-reach intra-data-center connectivity, pairing a 1 x LC duplex optical interface with 50 µm multimode fiber to deliver robust performance over standard MMF installations in data centers and enterprise facilities.
• Hot-swappable QSFP form factor for uptime: Plugging into compatible switches and routers without powering down the host device, this transceiver minimizes downtime and maximizes uptime in production environments, making it ideal for live-migration, maintenance windows, and phased network upgrades.
• Wide compatibility and ease of integration: Optimized for Cisco devices and select third-party platforms that support 40GBASE-X, enabling smooth operation in mixed-vendor environments and future-proofing your plan for gradual upgrades across the network.

Technical Details of Cisco QSFP40G BiDi Short-reach Transceiver

• Connector: 1 x LC duplex
• Fiber Type: Multi-mode optical fiber, 50 µm core
• Operational Mode: Bidirectional BiDi over duplex MMF
• Data Rate: 40 Gbps (40 Gigabit Ethernet)
• Standard: 40GBASE-X family
• Form Factor: QSFP (Quad Small Form-factor Pluggable)
• Distance Capability: Short-reach applications within data centers and campus networks
• Hot-swappable: Yes, designed for field replacement without powering down the host device
• Compatibility: Optimized for Cisco devices and select third-party systems that support 40GBASE-X

how to install Cisco QSFP40G BiDi Short-reach Transceiver

• Power down the host device only if required by your maintenance policy, and prepare the port for replacement or insertion.
• Verify compatibility that the destination switch or router supports 40GBASE-X BiDi transceivers and that the port is configured for 40G operation.
• Remove the existing module from the QSFP port and handle the new transceiver by its edges to avoid touching the connector.
• Insert firmly the Cisco QSFP40G BiDi Short-reach Transceiver into the QSFP port until it seats with a click, then secure any retention mechanisms if present.
• Connect the fiber pair by attaching the LC duplex multimode fiber to the transceiver, ensuring proper polarity and alignment for transmit and receive paths.
• Power up and configure the device or revert to normal operation, then verify link status and negotiate the 40GBASE-X connection on both ends.
• Validate connectivity by running basic tests such as ping, throughput checks, and link verification to confirm stable operation and optimal performance.

Frequently asked questions

• Q: What is BiDi over duplex MMF? A: Bidirectional (BiDi) technology uses two wavelengths on a single duplex multimode fiber pair to carry both transmit and receive signals, delivering full-duplex 40 Gbps performance over short-reach links while reducing fiber count and patching complexity.
• Q: Is the Cisco QSFP40G BiDi Short-reach Transceiver hot-swappable? A: Yes. It is designed for field replacement without powering down the host device, helping minimize downtime during maintenance or upgrades when your network policy permits.
• Q: Which devices are compatible with this transceiver? A: The module is optimized for Cisco devices and select third-party systems that support 40GBASE-X, enabling interoperability in mixed-vendor environments and easing gradual network upgrades.
• Q: What fiber and connector should I use? A: The transceiver uses a 1 x LC duplex connection and is intended for 50 µm multimode fiber, making it suitable for short-reach intra-data-center deployments where standard MMF cabling is prevalent.
• Q: What performance and reliability benefits does BiDi provide? A: BiDi over MMF reduces fiber plant complexity, lowers cable count, and maintains low latency and minimal packet loss for high-demand workloads typical of data centers, campuses, and telecom edge sites.