111000Base-X SFP interfaceEach S5120-SI series provides one or four 1000Base-X SFP interfaces on its front panel. You can selectthe GE SFP transceiver modules described in Table 5.Table 5 Transceivers supported by the S5120-SI series 1000Base-X SFP interfacesTransceivertype Transceiver module Centralwavelength Connector FiberMaxtransmissiondistance50/125 μmmultimodeoptical fiber550 m(0.34miles)SFP-GE-SX-MM850-A 850 nm62.5/125 μmmultimodeoptical fiber275 m(0.17miles)SFP-GE-LX-SM1310-A10 km(6.21miles)SFP-GE-LH40-SM13101310 nm40 km(24.86miles)SFP-GE-LH40-SM155040 km(24.86miles)SFP-GE-LH70-SM15501550 nmLC9/125 μmsingle modeoptical fiber70 km(43.50miles)SFP-GE-LX-SM1310-BIDI* TX: 1310RX: 1490SFP-GE-LX-SM1490-BIDI* TX: 1490RX: 1310LC9/125 μmsingle modeoptical fiber10 km(6.21miles)GE SFPtransceivermoduleSFP-GE-T — RJ-45 Twisted paircable100 m(328.08ft)* SFP-GE-LX-SM1310-BIDI and SFP-GE-LX-SM1490-BIDI must be used in pairs.NOTE:• H3C recommends you to use SFP transceiver modules of H3C on the S5120-SI series.• The SFP transceiver modules available for this switch series are subject to change over time. For the mostup-to-date list of SFP transceiver modules, consult your H3C sales representative or technical supportengineer.• For the SFP transceiver module specifications, see theH3C Low End Series Ethernet Switches PluggableModules Manual.