Twoindicators,tothelowerrightandleftoftheconnector,showthestatusofthenetworkconnection.When
yourcomputerconnectstoaLANandasessionwiththenetworkisavailable,thelowerrightindicatoris
solidgreen.Whiledataisbeingtransmitted,thelowerleftindicatorblinksyellow.
Fordetails,refertotheinstructionsin“AccessConnections”onpage20.
Note:IfyouattachyourcomputertotheThinkPadPortReplicatorSeries3,ThinkPadMiniDockSeries
3,ThinkPadMiniDockPlusSeries3,andThinkPadMiniDockPlusSeries3(170W)anduseanEthernet
connector,usetheEthernetconnectorontheThinkPadPortReplicatorSeries3,ThinkPadMiniDock
Series3,ThinkPadMiniDockPlusSeries3,andThinkPadMiniDockPlusSeries3(170W),nottheone
onthecomputer.
4DisplayPortconnector
YourcomputersupportstheDisplayPort,anext-generationdigitaldisplayinterfacethatconnectsa
compatibleprojector,externalmonitor,orHDTVtoyourcomputer.
5USBconnector(left)
TheUniversalSerialBusconnectorsareusedforconnectingdevicescompatiblewithaUSBinterface,
suchasaprinteroradigitalcamera.
Note:YourcomputeriscompatiblewithUSB1.1and2.0.
6Smartcardslot
YourcomputerhastheSmartcardslot.
Fordetails,refertotheinstructionsin“Usingthemediacardreader”onpage79.
Bottomview
Figure4.ThinkPadT420/T420ibottomview
8UserGuide