Cisco 1000BASE-SX SFP Module for Gigabit Ethernet Deployments, Hot Swappable,  (GLC-SX-MMD=)

About:

• COMPATIBILITY: 1000BASE-SX SFP is designed for operation on multimode fiber
  
• OPERATION: Operates distances up to 1km over laser-optimized 50 μm core multimode fiber cable
  
  
• HOT SWAPPABLE: Plugs into an Ethernet SFP port or slot with no need to power down if installing or replacing
  
  
• VERSATILITY: SFP receiver/transceiver module supports “pay-as-you-populate” model for flexible media and interface choice on a port-by-port basis