Left-Side View; Bottom View - Lenovo ThinkPad T550 Hardware Maintenance Manual

Left-side view

7
1
Smart-card-reader slot (available on some models)
3
Media-card-reader slot
5
VGA connector
7
Power connector
1
: The indicator in the ThinkPad logo and the indicator in the center of the power button show the system
status of the computer.
Blinks for three times: The computer is initially connected to power.
On: The computer is on (in normal mode).
Blinks fast: The computer is entering sleep or hibernation mode.
Blinks slowly: The computer is in sleep mode.
Off: The computer is off or in hibernation mode.

Bottom view

1
Removable battery
3
Keyboard drainage holes
5
Emergency-reset hole
42
Hardware Maintenance Manual
6
5
4
3
2
1
4
3
5
2
Ethernet connector
4
Audio connector
6
USB 3.0 connector
8
System-status indicator
1
2
3
4
2
Docking station connector
4
Speakers
1