Lenovo ThinkPad T550 (English) Hardware Maintenance Manual - ThinkPad T550, W5 - Page 48
Left-side view, Bottom view, Blinksforthreetimes, Blinksfast, Blinks slowly - docking station
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Left-side view 8 7 6 5 4 3 2 1 1 Smart-card-reader slot (available on some models) 3 Media-card-reader slot 5 VGA connector 7 Power connector 2 Ethernet connector 4 Audio connector 6 USB 3.0 connector 8 System-status indicator 1 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 2 4 1 Removable battery 3 Keyboard drainage holes 5 Emergency-reset hole 6 5 3 4 2 Docking station connector 4 Speakers 42 Hardware Maintenance Manual