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ASUS Z87-WS
1-23
Chapter 1
1.2.7 Onboard LEDs
1. POST State LEDs
The POST State LEDs provide the status of these key components during POST
(Power-On-Self Test): CPU, memory modules, VGA card, and hard disk drives If an
error is found, the critical component’s LED stays lit until the problem is solved.
2. TPU LED
The TPU LED lights up when the TPU switch is enabled.