1000BASE-ZX, Small Form-factor Pluggable (SFP), 1550nm Transmitter Wavelength, LC Connector, Single-mode Fiber (SMF), Digital Diagnostics Function (DDM), up to 120km reach
1000BASE-SX, up to 2 Gbps Data Rate, Small Form-factor Pluggable (SFP), 850nm Transmitter Wavelength, LC Connector, Multi-mode Fiber (MMF), up to 550 meter reach