3PCIExpressMiniCardslotforwirelessWAN
YourcomputermightincludeaPCIExpressMiniCardforwirelessWANinthePCIExpressMiniCard
slotwhichenableswirelessWANcommunications.
4Memory-upgradeslot
Youcanincreasetheamountofmemoryinyourcomputerbyinstallingamemorymoduleinthememory
bay.Memorymodulesareavailableasoptions.
5Harddiskdrive
Yourcomputermayhavealarge-capacity,customer-upgradableharddiskdrivethatcanmeetavarietyof
storagedemands.Tokeepthedrivesafe,ActiveProtectionSystem™isinstalledonyourcomputer.For
details,r efert o“ ActiveProtectionSystem”onpage21.
Note:ThehiddenservicepartitionisthereasonwhythereislessfreespacethanexpectedonyourHDD.
6PCIExpr essMiniCardslotforwirelessLAN/WiMAX
YourcomputermightincludeaPCIExpressMiniCardforwirelessLAN/WiMAXinthePCIExpressMiniCard
slotwhichenableswirelessLAN/WiMAXcommunications.
Rearview
Figure6.ThinkPadEdgeE420andE520rearview
1Ethernetconnector2Fanlouvers(rear)
1Ethernetconnector
ConnectyourcomputertoaLANwiththeEthernetconnector.
10UserGuide