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Description
StarTech.com Cisco SFP-10G-BX-D-40 Compatible SFP+ Module - 10GBASE-BX - 10 GbE Gigabit Ethernet BiDi Single Mode Fiber (SMF) TransceiverExperience 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
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.
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4.2 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 4
Almost Perfect
Color: Graphite, Pattern Name: Mouse
If you are looking for a quiet mouse, this is it. I was skeptical about the "ergonomics" but find that it is much more comfortable for me than the more traditional design for left and right clicking. Simple moving seems fine but its weight is a bit excessive for lifting for repositioning in tight spaces. It is difficult to lift without activating the button on the haptic pad, even set to require firm pressure. A bit more contour on the right would solve this nicely to allow lifting the mouse without repositioning your hand.
The forward and back buttons may be a bit awkward for some people. I'm slowly adjusting. Actually, each mouse I've owned needed a bit of getting used to. Side scrolling doesn't always work as it seems it would. Frequently, it scrolls vertically like the "normal" scroll wheel depending on the program.
Haptic feedback is not a commonly used feature yet, however, Windows will be slowly adding haptic features to later updates from what I've read. I keep the setting on the lowest haptic feedback level and for what it functions on so far seems natural and not intrusive.
There are many adjustments and customizations, too many to go into since I haven't played around with most. So far, even with what may seem like a lot of negative thoughts, I love this mouse. It would be five stars if lifting to repositioning in tight spaces was easier.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Dependable, Reliable
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey, Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
As advertised. Logitech, best mouse for your hard-earned cheddar!
It’s not that the (years) old Logitech mouse failed in any operational way, it just got that gummy, sticky surface texture that’s impossible to remove. While shopping for a replacement I noticed an off-brand mouse/keyboard combo and thought, “hey, 2 for 1”…mistake. All was well for about three weeks, long enough that when the gremlins arrived I didn’t immediately associate the new hardware. For the purposes of this discussion, gentle reader, know that I run legacy (what I affectionately refer to as, “Lazarus”) builds. Rigs that started life running Windows Vista/7, died, and that now, resurrected, run 10 and 11, and all that that implies. So, when a mouse started stuttering, of course I thought it was a gremlin in the machine, right? I spent more days than I am comfortable sharing with you pouring over processes and background apps, and registry trims…before Accam’s Razor suggested I eliminate the mouse as a variable. Changing the battery was ineffective, but when I swapped in the ooold Logitech…Yahtzee/Bingo/Booyah…smooth and precise…butter! All I needed was a new Logitech mouse.
So, if you’re here you likely are having mouse issues of your own, or you just need one that works…this is it!
😉
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Nice and a great value.
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
Hey, it works well. Just plug it in and you are ready to go. Only issue, minor, no light or color coding on back to indicate on or off.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Smooth and ergo nice mouse.
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
I needed this little thing quickly and got it within 2 hours of ordering. It was only an extra five bucks to get it now. Would have burned more than that in fuel. Works exactly as I would have expected. Perfect.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Simple and efficient
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
This is a dandy little item. Easy to use straight out of the box, No fancy bells and whistles.but why should a mouse try to replicate commands that are on the laptop?
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Reviewed in the United States on May 16, 2026