Description Cisco 1000BASE-SX is a Gigabit Ethernet SFP transceiver module designed for short-range data transmission over multimode fiber (MMF). Operating at an 850 nm wavelength, it supports distances up to 550 meters, depending on the fiber type. Technical Specifications Condition New/Never Used Surplus Brand Cisco Category Networking Equipment Part Number 1000BASE-SX Subcategory Optical Transceiver Modules Form Factor SFP Wavelength 850nm Connector Duplex LC Transmitter Type VCSEL DDM/DOM Supported TX Power -9.5 ~ - 3dBm Typical Power Consumption ≤0.8w Bit Error Ratio (BER) 1E-12 Vendor Name FS Max. Data Rate 1.25Gbps Commercial Temperature Range 0 to 70°C (32 to 158°F) Receiver Sensitivity < -17dBm Receiver Overload -3dBm Extinction Ratio >9dB MTBF (SX) 2,457,002 Hours Weight 0.04 lbs Information About 1000BASE-SX The Cisco 1000BASE-SX is a Gigabit Ethernet SFP transceiver module designed for short-range data transmission over multimode fiber (MMF). Operating at an 850 nm wavelength, it supports distances up to 550 meters on 50/125 µm MMF and up to 220 meters on 62.5/125 µm MMF, depending on the fiber type. This module features a duplex LC connector, is hot-swappable, and is ideal for intra-building connections in enterprise networks. Key Features: Standard: IEEE 802.3z 1000BASE-SX Form Factor: SFP (Small Form-Factor Pluggable) Wavelength: 850 nm Connector: Duplex LC Fiber Type: Multimode Fiber (MMF) Maximum Distance: Up to 550 meters on 50/125 µm MMF Up to 220 meters on 62.5/125 µm MMF Data Rate: 1 Gbps Hot-Swappable: Yes Digital Optical Monitoring (DOM): Supported in models like GLC-SX-MMD