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Cisco GLC-BX40-U-I 1000BASE-BX40-U BiDi SFP 40 km
1 Gbps 1000BASE-BX40-U BiDi SFP transceiver, Tx 1310 nm / Rx 1550 nm, up to 40 km, Ethernet. Genuine Cisco part for Cisco IE industrial Ethernet switches, IR routers and rugged deployments.
- Manufacturer
- Cisco Systems
- Mfr part number
- GLC-BX40-U-I
- Series
- Industrial (IE / rugged) · 1G SFP
- Category
- Fiber optic transceiver modules
- Datasheet
- GLC-BX40-U-I datasheet (PDF)
GLC-BX40-U-I specifications
| Attribute | Value |
|---|---|
| Part Number | GLC-BX40-U-I |
| Manufacturer | Cisco Systems |
| Brand | Cisco |
| Standard | 1000BASE-BX40-U BiDi |
| Form Factor | SFP, hot-swappable |
| Data Rate | 1 Gbps |
| Protocol | Ethernet |
| Wavelength | Tx 1310 nm / Rx 1550 nm (1490 nm with DA) |
| Media | Single-mode fiber (OS2), single strand |
| Max Distance | 40km |
| Connector | LC simplex |
| Lifecycle | Current Cisco part |
| Case Temp | -40 to 85 °C |
| DOM / DDM | Supported (Cisco matrix) |
| Dimensions | 8.5 × 13.4 × 56.5 mm |
| Compliance | IEEE 802.3 / Telcordia as applicable, SFF-8472 (SFP MSA) |
| Platforms | Cisco IE industrial Ethernet switches |
| Product line | Industrial (IE / rugged) |
| Cisco description | 1000BASE-BX40-U BiDi SFP 40km, industrial temp, DOM |
| Cisco compatibility matrix | Listed (TMG matrix, 55 Cisco device families) |
Values are from Cisco datasheets, Cisco end-of-sale bulletins, Cisco hardware guides and the Cisco Transceiver Module Group compatibility matrix (Nov 2026). Confirm your device model and software release with us before ordering.
About the Cisco GLC-BX40-U-I
The Cisco GLC-BX40-U-I is a hot-swappable SFP 1000BASE-BX40-U BiDi optical transceiver for 1 Gbps Ethernet links over single-mode fiber, with an LC simplex interface and reach of up to 40 km. Cisco description: 1000BASE-BX40-U BiDi SFP 40km, industrial temp, DOM. Cisco IOS XE, NX-OS, IOS XR and ONS software read the Cisco coding at insertion, so a genuine module avoids 'unsupported transceiver' messages. Typical uses: Gigabit uplinks, campus and inter-building fiber, access and WAN hand-off links on Cisco IE industrial Ethernet switches, IR routers and rugged deployments.
- 1 Gbps 1000BASE-BX40-U BiDi up to 40 km
- Genuine Cisco part for Cisco IE industrial Ethernet switches
- Listed in Cisco's compatibility matrix for 55 Cisco device families
- LC simplex connector · Single-mode fiber
- Genuine OEM part · GST invoice · pan-India dispatch
GLC-BX40-U-I: frequently asked questions
What is the Cisco GLC-BX40-U-I?
The GLC-BX40-U-I is an SFP 1000BASE-BX40-U BiDi module for 1 Gbps Ethernet links. It is used for Gigabit uplinks, campus and inter-building fiber, access and WAN hand-off links on Cisco IE industrial Ethernet switches, IR routers and rugged deployments.
What is the maximum distance of the GLC-BX40-U-I?
Cisco documentation lists the GLC-BX40-U-I for 40km.
Which fiber and connector does the GLC-BX40-U-I need?
The GLC-BX40-U-I uses an LC simplex connector on single-mode fiber (OS2), single strand. Wavelength: Tx 1310 nm / Rx 1550 nm (1490 nm with DA). BiDi optics use different wavelengths in each direction: pair a D (downstream) module with a U (upstream) module, or use the same BiDi model at both ends where Cisco specifies a symmetric BiDi.
Which Cisco devices support the GLC-BX40-U-I?
Cisco's Transceiver Module Group (TMG) compatibility matrix lists the GLC-BX40-U-I for 55 Cisco device families (for example Cisco IE industrial Ethernet switches, IR routers and rugged deployments). Support depends on the exact line card and software release, so send us your device model and release and we check the matrix before dispatch.
Is your GLC-BX40-U-I genuine Cisco?
Yes. Next Gen Networks supplies original Cisco parts, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch and we share serial numbers on request so you can verify them in 'show inventory' / the transceiver page. If you want a lower-cost Cisco-coded compatible module for non-critical links, ask us and we quote both options.
What is the GLC-BX40-U-I price in India and how do I order?
The Cisco GLC-BX40-U-I price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in and we reply with a GST quote.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
Cisco_GLC-BX40-U-I_Datasheet_NextGenNetworks.pdf
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