Computer Hardware User Manual
Table Of Contents
- Safety information
- Chapter 1: Product Introduction
- Chapter 2: Basic installation
- Chapter 3: BIOS setup
- Chapter 4: Software support
- 4.1 Installing an operating system
- 4.2 Support DVD information
- 4.3 Software information
- 4.3.1 AI Suite 3
- 4.3.2 Dual Intelligent Processors 4
- 4.3.3 EPU
- 4.3.4 DIGI+ Power Control
- 4.3.5 Fan Xpert 2
- 4.3.6 USB 3.0 Boost
- 4.3.7 Network iControl
- 4.3.8 USB BIOS Flashback
- 4.3.9 Ai Charger+
- 4.3.10 EZ Update
- 4.3.11 USB Charger+
- 4.3.12 System Information
- 4.3.13 ASUS SSD Caching II
- 4.3.14 Audio configurations
- 4.3.15 ASUS Dr. Power Utility
- Chapter 5: RAID support
- Chapter 6: Multiple GPU support
- Appendices

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.