This listing is for (1) New! Extreme Networks XGM3SB-4SF 4x10Gb SFP+ Module 16120.
XGM3SB-4sf Option Card
The XGM3SB-4sf option card Slot B on the rear panel of the E4G-400 router. These ports support synchronous Ethernet and can be used for data links. The XGM3SB-4sf option card supports either SFP+ optical modules or the SFP+direct-attach passive copper cable