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Right-side view
Figure 2. ThinkPad T420/T420i right-side view
1 Security keyhole 2 USB connector
3 eSATA/USB combo connector 4 ExpressCard slot
5 Media card reader slot 6 Wireless radio switch
7 Serial Ultrabay enhanced 8 Combo audio jack
1 Security keyhole
Your computer comes with a security keyhole. You can purchase a security cable and lock to t this keyhole.
2 USB connector
The Universal Serial Bus connector is used for connecting devices compatible with a USB interface, such as
a printer or a digital camera.
Note: Your computer is compatible with USB 1.1 and 2.0.
3 eSATA/USB combo connector
The Universal Serial Bus connectors are used for connecting devices compatible with a USB interface,
such as a printer or a digital camera.
Note: Your computer is compatible with USB 1.1 and 2.0.
You can also connect an external SATA device, such as an external hard disk drive, to this connector
on some models.
Note: To avoid damaging the connector, be careful when you attach a cable from the external SATA device
to the connector.
4 ExpressCard slot
Your computer has the ExpressCard slot for a 34 mm-wide card.
Chapter 1. Product Overview 5