Gigabit Ethernet switch module with 8x dual speed SFP slots suitable for multimode / singlemode (monomode) or Bidi (WDM / SingleFiber) SFP modules (mini GBIC): 100MBit/s Fast Ethernet 100Base-FX and / or 1000MBit/s Gigabit Ethernet 1000Base-SX or 1000Base-LX for insert in 19" switch product group or .