StarTech.com Cisco SFP-10G-BX-D-40 Compatible SFP+ Module - 10GBASE-BX - 10 GbE Gigabit Ethernet BiDi Single Mode Fiber (SMF) Transceiver

Experience high-speed, cost-efficient fiber connectivity with the StarTech.com Cisco SFP-10G-BX-D-40 Compatible SFP+ Module. This downstream 10GBASE-BX-D-40 BiDi SMF transceiver is designed to pair with StarTech.com's SFP-10G-BX-U-40-ST, delivering reliable, plug-and-play duplex 10 GbE over a single fiber strand. Built to Cisco standards and tested for interoperability, it is ideal for data centers, enterprise networks, and edge deployments that demand scalable bandwidth with streamlined fiber management. Whether you’re upgrading core infrastructure, extending campus networks, or linking remote sites, this module provides a compact, high-performance solution that reduces fiber sprawl and accelerates deployment. With robust build quality and proven compatibility, you can rely on consistent, low-latency performance in demanding 10 Gigabit environments.

• BiDi 10GBASE-BX-D-40 downstream transceiver for single-fiber 10 GbE links, reducing fiber counts and installation complexity while preserving full-duplex performance.
• Designed, programmed, and tested for Cisco 10GBase-BX components; ensures seamless interoperability with Cisco switches and routers, minimizing compatibility concerns during upgrades or network expansions.
• Pairing compatibility: completes a full BiDi link when used with StarTech SFP-10G-BX-U-40-ST in the upstream direction, enabling flexible bidirectional fiber configurations across diverse network topologies.
• Distance capability up to 40 kilometers on single-mode fiber, enabling long-haul connections between data centers, campuses, or remote sites without multiple fibers or repeaters.
• Easy installation and enterprise-grade reliability with a hot-swappable SFP+ form factor, rugged housing, and rigorous quality testing to withstand data-center conditions and field deployments.

Technical Details of StarTech.com Cisco SFP-10G-BX-D-40 Compatible SFP+ Module - 10GBASE-BX

• Form Factor: SFP+ Transceiver
• Standard: 10GBASE-BX-D-40 BiDi
• Fiber Type: Single-Mode Fiber (SMF)
• Distance: Up to 40 km
• Interoperability: Cisco 10GBase-BX devices; tested with StarTech SFP-10G-BX-U-40-ST

How to install StarTech.com Cisco SFP-10G-BX-D-40 Compatible SFP+ Module

Follow these steps to install and verify your BiDi transceiver for a reliable 10 GbE link:

• Power down both devices and disconnect power to prevent static discharge and accidental damage during installation.
• Remove the existing module from the SFP+ slot (or ensure the slot is empty) on the Cisco device.
• Hold the module by its edges and align it with the SFP+ slot, then insert firmly until it snaps into place. Do not force insertion, and avoid touching connector tips.
• Connect the paired single-mode fiber cable to the transceiver’s fiber port(s) according to your network design. For BiDi links, ensure the correct fiber polarity and connector type (e.g., LC/UPC) for the Tx/Rx wavelengths as specified by your topology.
• Power on both devices and verify the link status via the device LEDs or management interface. Confirm the port negotiates at 10 GbE and that there are no error indicators on the link.
• Enter the appropriate Cisco configuration for 10GBASE-BX operation if required (e.g., interface settings, speed, duplex). Run basic throughput tests to validate stable performance and verify there are no CRC or retransmission errors.

Frequently asked questions

• Q: Is the StarTech Cisco SFP-10G-BX-D-40 compatible with Cisco switches and routers? A: Yes. This module is designed, programmed, and tested to work with 10GBase-BX compatible Cisco devices and pairs with StarTech's SFP-10G-BX-U-40-ST for upstream connectivity.
• Q: What distance can this BiDi transceiver support? A: It supports up to 40 kilometers over single-mode fiber, depending on fiber quality, connector integrity, and overall network design.
• Q: Can I use this module with non-Cisco equipment? A: The module is engineered for Cisco 10GBase-BX deployments; compatibility with non-Cisco devices is not guaranteed and may require testing or alternative models from StarTech.
• Q: Does this module require any special configuration? A: In most environments it operates as a standard SFP+ transceiver. Ensure the connected device port is configured for 10GBASE-BX mode, and verify the correct fiber pairing and polarity in your network design.
• Q: Is the module hot-swappable? A: Yes. Like other SFP+ modules, it can be inserted or removed without powering down the entire system, though best-practice safety steps and equipment shutdown are recommended for critical deployments.