User's Manual

Table Of Contents
Rear
1. Nano-SIM-card tray*
Use the Nano Subscriber Identity Module (SIM) card to connect to a wireless-
WAN network. See “Connect to a cellular network (for selected models)” on page
17.
2. System status indicator
The indicator in the ThinkPad logo on the computer lid shows the system status of
your computer.
Blinking for three times: The computer is initially connected to power.
On: The computer is on.
Off: The computer is off or in hibernation mode.
Blinking rapidly: The computer is entering sleep or hibernation mode.
Blinking slowly: The computer is in sleep mode.
* for selected models
10
T14 Gen 1, T15 Gen 1, P14s Gen 1, and P15s Gen 1 User Guide