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3 Port replicator or docking station connector
Connect your computer to a supported docking station or port replicator through this connector to extend
the computer capabilities when you are in your ofce or at home. For more information about the supported
docking stations and port replicators, see “ThinkPad docking stations and port replicators” on page 100.
4 Memory-upgrade slot
You can increase the amount of memory in your computer by installing a memory module in the
memory-upgrade slot. Memory modules are available as options from Lenovo.
For more information, see “Replacing a memory module” on page 69.
5 Hard disk drive or solid state drive
Your computer has a large-capacity, customer-upgradable hard disk drive or solid state drive that can meet
a variety of storage demands.
If you wish, you can purchase another hard disk drive or solid state drive and install it in the Serial Ultrabay
Slim bay.
6 SIM card slot
If your computer has a wireless WAN feature, it might require a Subscriber Identication Module (SIM) card
to establish wireless WAN connections. Depending on the country of delivery, the SIM card might already be
installed in the SIM card slot.
7 Battery
Use your computer with battery power whenever ac power is unavailable.
By installing a second battery, available as an option, in the Serial Ultrabay Slim bay, you can extend the
operating time of the computer. You also can use Power Manager to adjust your power settings as needed.
Rear View
Figure 5. ThinkPad T430s and T430si rear view
1 Power jack 2 Ethernet connector
3 USB 3.0 connector
4 Mini DisplayPort connector or Thunderbolt connector
5 Always On USB connector 6 Video graphics array (VGA) connector
7 Fan louvers
6 User Guide