- Name:
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GLC-BX40-D-I=
- Description:
- 1000BASE-BX40 SFP 1550NM
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GLC-BX40-D-I=
1000BASE-BX40 SFP 1550NM
$1,262.18
5 in Global Warehouse
$1,262.18
61% off
TRUSTED, TRIED, PROVEN
GLC-BX40-D-I= Overview
GLC-BX40-D-I= is an SFP transceiver designed for Ethernet applications that delivers a 1G data rate over single-mode fiber using an LC connector interface. It provides long-range connectivity with a maximum transmission distance of 40 km, making it ideal for point-to-point links in data centers, enterprise networks, and telecom environments.
Engineered with a standard SFP form factor, this module offers compact physical dimensions and low power consumption while supporting full Ethernet protocols for reliable data transmission. Its robust design and compatibility with Cisco systems ensure seamless integration into high-density network deployments.
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GLC-BX40-D-I= Specifications
| Product Type | Transceiver |
| Form Factor | SFP |
| Data Rate | 1G |
| Connector Type | LC |
| Wavelength | 1310/1490 nm |
| Transmission Distance | Long-Range |
| Fiber Type | Single-mode |
| Max Distance | 40 km |
| Supported Protocols | Ethernet |
| Network Interface | Fiber |
| Power Consumption | 1.2W |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Cisco |
| Product Name | GLC-BX40-D-I= |
| Height | 0.28 inches |
| Width | 2.18 inches |
| Depth | 1.20 inches |
| Weight | 0.06 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Compatibility | Cisco | Cisco | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 1G | 10G | 1G | 10G | 10G |
| Depth | 1.20 inches | 1.76 inches | 1.76 inches | N/A | 1.2 inches |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Multi-mode |
| Form Factor | SFP | SFP+ | SFP | SFP+ | SFP+ |
| Height | 0.28 inches | 0.66 inches | 0.13 inches | N/A | 0.5 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 40 km | 300 meters | 80 km | N/A | 300 meters |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 1.2W | 1.5W | 2.2 W | N/A | 2.5W |
| Product Name | GLC-BX40-D-I= | Cisco 10GBASE-SR SFP+ Transceiver (J9153A) | DWDM-SFP-4532-C | J4860D-1270-C | AA1403013-3504-E6-C 10G SFP+ Transceiver |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet, Fibre Channel | Ethernet | Ethernet |
| Transmission Distance | Long-Range | Short-Range | Long-Range | Short-Range | Short-Range |
| Wavelength | 1310/1490 nm | 850nm | 1550 nm | 1270 nm | 850nm |
| Weight | 0.06 lbs | 0.09 lbs | 0.08 lbs | N/A | 0.08 lbs |
| Width | 2.18 inches | 0.87 inches | 0.55 inches | N/A | 1.5 inches |
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Questions & Answers
Q
What is the Cisco GLC-BX40-D-I= 1000BASE-BX40 SFP 1550nm module?
A
The Cisco GLC-BX40-D-I= is a 1000BASE-BX40 single-mode SFP transceiver module that delivers gigabit Ethernet up to 40 km over single-mode fiber at a 1550 nm wavelength.
Q
What is the maximum transmission distance supported by GLC-BX40-D-I=?
A
The GLC-BX40-D-I= module supports a maximum fiber link distance of 40 km when used over standard single-mode fiber (SMF).
Q
Which fiber type and connector does the GLC-BX40-D-I= require?
A
The module requires single-mode fiber (SMF) and uses a duplex LC fiber connector for both transmit and receive links.
Q
Which Cisco devices are compatible with the GLC-BX40-D-I=?
A
The GLC-BX40-D-I= is compatible with Cisco Catalyst switches, Nexus switches, ASR and ISR routers, and UCS servers; always verify compatibility in the module’s data sheet.
Q
Does the GLC-BX40-D-I= support hot-swappable installation?
A
Yes, the GLC-BX40-D-I= is fully hot-swappable, allowing insertion or removal without powering down the host device.
Q
What wavelength does the GLC-BX40-D-I= operate at?
A
The GLC-BX40-D-I= operates at a 1550 nm wavelength optimized for long-reach single-mode links.
Q
What is the data rate of the Cisco GLC-BX40-D-I=?
A
The module supports a data rate of 1.25 Gbps (Gigabit Ethernet) in compliance with 1000BASE-BX40 specifications.
Q
Is the GLC-BX40-D-I= compliant with industry standards?
A
Yes, it is IEEE 802.3z-compliant and meets SFF-8472 specifications for 1000BASE-BX40 single-mode SFP transceivers.
Q
Does the GLC-BX40-D-I= support Digital Optical Monitoring (DOM)?
A
Yes, the transceiver supports SFF-8472 Digital Optical Monitoring for real-time tracking of optical power, temperature, and voltage.
Q
What is the operating temperature range for the GLC-BX40-D-I=?
A
The GLC-BX40-D-I= operates reliably in temperatures from –40 °C to +85 °C (industrial grade).
Q
How do I install the GLC-BX40-D-I= SFP module?
A
To install, align the module with the SFP slot, gently push until the latch clicks, then secure cable connectors to the LC ports.
Q
What is the power consumption of the Cisco GLC-BX40-D-I=?
A
Typical power consumption for the GLC-BX40-D-I= is 1.0 W maximum under standard operating conditions.
Q
What warranty coverage comes with the GLC-BX40-D-I=?
A
Cisco provides a standard limited hardware warranty—typically one year—from the date of shipment; extended coverage is available via Cisco service contracts.
Q
Can I use the GLC-BX40-D-I= module with third-party switches?
A
While the GLC-BX40-D-I= may operate on select third-party hardware, full compatibility and support are guaranteed only on Cisco platforms.
Q
What is the difference between GLC-BX40-D-I= and GLC-BX40-U=?
A
The GLC-BX40-D-I= transmits at 1550 nm (downstream) for 40 km, whereas the GLC-BX40-U= transmits at 1310 nm (upstream) for 40 km; they pair to form a bidirectional link.


