Manufacturer: Allen-Bradley / Rockwell AutomationAllen-Bradley 1783-SFP1GSX Stratix Fiber Optic Uplink (SFP) Transceiver, 1000Base-SX Multi-mode Fiber Transceiver for Stratix 8000/8300, Stratix 6000 Series Managed Switches, SFP Type (Small Form-factor Pluggable), 1000 Mbit, 850 nm Multi-Mode Fiber (MMF)