Board Status Leds - Intel DZ77BH-55K Specification

Table 13. Board Status LEDs
Item/Callout
in Figure 9 LED Name
A Hard Drive Activity
B CPU Hot
C VR Hot
D Watch Dog Fire / Back to
BIOS
E CPU Initialization
F Memory Initialization
G Video Initialization
H USB Initialization
I Hard Drive Initialization
J Option ROM Initialization
K Operating System Start
LED
Color Supported Modes
Blue On/Off
Red On/Off
Red On/Off
Red On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Green On/Off/Flash
Product Description
Control Source
Hard drive
controller(s)
Discrete circuit
Discrete circuit
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS
BIOS
43