Description:

The Cisco MGBSX1 Gigabit Ethernet Mini-GBIC SFP Transceiver is an optical transceiver module used in Cisco networking equipment to provide Gigabit Ethernet fiber connectivity over multimode fiber infrastructure. It operates at an 850 nm wavelength and supports data transmission distances of up to 550 meters to 1,000 meters depending on fiber type and network configuration. Commonly installed in Cisco switches, routers, and network devices equipped with SFP ports, this module enables high-speed fiber uplink connections between network switches, servers, and core network equipment. Network administrators, maintenance teams, and system integrators use this transceiver for network expansion, replacing failed SFP modules, or establishing reliable Gigabit fiber connections in enterprise networking environments.

Applications:

The Cisco MGBSX1 SFP module is used in enterprise network infrastructures to provide Gigabit Ethernet fiber connectivity between switches, routers, and other network devices. It is commonly deployed in campus networks, data center connections, and network backbone links where multimode fiber is used to support high-speed data communication. Organizations install this transceiver to establish reliable short-distance fiber uplinks between network devices and maintain stable high-speed network connectivity.

Technical Specifications:

• Brand: Cisco
• Manufacturer Part Number (MPN): MGBSX1
• Product Type: Gigabit Ethernet SFP Transceiver
• Interface Type: Mini-GBIC / SFP
• Data Rate: 1 Gbps (Gigabit Ethernet)
• Wavelength: 850 nm
• Fiber Type: Multimode Fiber (MMF)
• Maximum Distance: Up to 550 m (OM2) / up to 1,000 m (depending on fiber type)
• Connector Type: Duplex LC
• Compatibility: Cisco switches and routers with SFP ports
• Form Factor: Hot-swappable SFP module
• Operating Standard: IEEE 802.3z 1000BASE-SX

Common Replacements:

• Cisco GLC-SX-MMD
• Cisco GLC-SX-MM
• Cisco GLC-LH-SMD