... 70°CHumidity10 ~ 90% (no condensing)Order InformationBDCOM S3928HPOENetwork management Router Switch, 20 ports 10/100/1000M Ethernet ports + 4 1000M SFP ... for 3928HPOEXFP-SX10 Gigabit XFP Multi-mode, 850nm,300m, LC interface optical moduleXFP-LX-1010 Gigabit XFP Single-mode, ... 1310nm,10km, LC interface optical moduleXFP-LX-4010 Gigabit XFP Single-mode, 1550nm ...