36
LED
Debug Code LED
LEDPOSTPOST
LED
16
16 0 1 2 3 4 5 6 7 8 9 A B C D E F
LED
0 1 2 3 4 5 6 7 8 9 A B C D E F
Security (SEC) –
Pre-EFI Initialization (PEI) –
Driver Execution Environment (DXE) –
Boot Device Selection (BDS) – pre-OS
(CD/DVDHDDUSB Shell, )
LED
SEC
01
( /
)
02 AP
03
04 PCH
06
07 AP
08
09 PCH
0B
SEC
0C - 0D (SEC)
0E
0F
PEI
10 PEI
11 Pre-memory CPU
12 - 14
Pre-memory CPU (CPU
)
15
Pre-memory
16 - 18
Pre-Memory (
)
19 Pre-memory PCH
1A - 1C
Pre-memory PCH (PCH
)
2B
SPD(Serial Presence
Detect)
2C