Left-sideview
Figure3.ThinkPadT420/T420ileft-sideview
1Fanlouvers(left)2Monitorconnector
3Ethernetconnector4DisplayPortconnector
5USBconnector(left)6Smartcardslot
1Fanlouvers(left)
Theinternalfanandlouversenableairtocirculateinthecomputerandcoolthecentralprocessor.
Note:Toavoidimpedingairow,donotplaceanyobstacleinfrontofthefan.
2Monitorconnector
Youcanattachanexternalmonitororaprojectortoyourcomputertodisplaycomputerinformation.
Note:IfyouattachyourcomputertotheThinkPadPortReplicatorSeries3,ThinkPadMiniDockSeries
3,ThinkPadMiniDockPlusSeries3,andThinkPadMiniDockPlusSeries3(170W)anduseamonitor
connector,usethemonitorconnectorontheThinkPadPortReplicatorSeries3,ThinkPadMiniDockSeries
3,ThinkPadMiniDockPlusSeries3,andThinkPadMiniDockPlusSeries3(170W),nottheoneonthe
computer.
Fordetails,refertotheinstructionsin“Attachinganexternalmonitor”onpage70.
3Ethernetconnector
ConnectyourcomputertoaLANwiththeEthernetconnector.
DANGER
Toavoidtheriskofelectricalshock,donotconnectthetelephonecabletotheEthernetconnector.
YoucanonlyconnectanEthernetcabletothisconnector.
Chapter1.ProductOverview7