Hirschmann MM4-2TX/SFP Gigabit Combo Module, 2 x 1000Base-TX, RJ45 Or SFP (For MS30). (SFP Modules Sold Separately) Product ID: 943 622-001
Hirschmann MM4-4TX/SFP Gigabit Combo Module, 4x 1000Base-TX, RJ45 or Gigabit Fiber SFP (For MS4128). (SFP Modules Sold Separately) Product ID: 943 010-001
Moxa EDS-728/828 Fiber Interface Module, 2 Open SFP Slots. (SFP Modules Sold Separately) Product ID: IM-2GSFP
Moxa EDS-728/828 Copper Interface Module, 2 x 10/100/1000Base-TX Ports, RJ45. Product ID: IM-2GTX