Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
MGBICBX120U - Enterasys 1Gbps 1000Base-BX-U TX1490nm/RX1590nm 120km SFP mini-GBIC Transceiver Module
- Form Factor: SFP (mini-GBIC)
- Data Rate: 1 Gbps
- Fiber Type: Single-Mode Fiber (SMF)
- Maximum Distance: 120 km
- Connector Type: Duplex LC
- Application: Long-haul and backbone networking
MGBICBX120U isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.
Key specifications
See full specs ↓- Product Type
- SFP Transceiver
- Interface
- 1Gbps Ethernet
- Fiber Mode
- Single-Mode Fiber (SMF)
- Max Distance
- 120 km
- Form Factor
- SFP (mini-GBIC)
- Connector
- Duplex LC
Product details
The Enterasys MGBICBX120U is a 1Gbps SFP (mini-GBIC) transceiver for single-mode fiber (SMF) connections. It supports duplex communication up to 120km, designed for very long-range network links.
Technical Information
| Product Type | SFP Transceiver |
| Interface | 1Gbps Ethernet |
| Fiber Mode | Single-Mode Fiber (SMF) |
Additional Specifications
| Max Distance | 120 km |
| Form Factor | SFP (mini-GBIC) |
| Connector | Duplex LC |
Description
The Enterasys MGBICBX120U is a Small Form-factor Pluggable (SFP) transceiver module, also known as a mini-GBIC, engineered for 1 Gigabit per second (Gbps) Ethernet connectivity. It is specifically designed to operate over single-mode fiber (SMF) optic cables, enabling network communication across extremely long distances. The 'U' designation might imply a standard or universal use case, but coupled with the 120km specification and 'Dup LC' in similar models, it strongly suggests duplex operation over SMF. This transceiver module is capable of supporting data transmission up to 120 kilometers. This extensive reach makes it ideal for critical long-haul network applications, such as connecting geographically dispersed sites, backbone infrastructure for service providers, or large-scale metropolitan area networks (MANs). Single-mode fiber is the medium of choice for such distances due to its low signal loss and high bandwidth capabilities. The MGBICBX120U provides a robust solution for extending network reach between core network devices like switches and routers. Its SFP form factor ensures compatibility with a wide range of networking equipment featuring SFP ports. The use of a Duplex LC connector is standard for high-performance, long-distance SMF transceivers, ensuring a reliable and secure connection for both transmit and receive signals over the 120km span.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for MGBICBX120U.


%2010km%20SMF%20Transcei.webp?width=1920&quality=75)
