Intel® Server Board S3420GPRX User Guide 37
0x7A X O O O O X O X Enabling the console
controller
Keyboard (only USB) / Keyboard (PS/2 or USB)
0x90 O XXO XXXXResetting the keyboard
0x91 O XXO XXXODisabling the keyboard
0x92 O X X O X X O X Detecting the presence of
the keyboard
0x93 O X X O X X O O Enabling the keyboard
0x94 O X X O X O X X Clearing keyboard input
buffer
0x95 O XXO XOXOInstructing keyboard to
run Self Test (PS/2 only)
Mouse (only USB) / Mouse (PS/2 or USB)
0x98 O XXO OXXXResetting the mouse
0x99 O XXO OXXODetecting the mouse
0x9A O X X O O X O X Detecting the presence of
mouse
0x9B O X X O O X O O Enabling the mouse
Fixed Media
0xB0 O XOO XXXXResetting fixed media
device
0xB1 O XOO XXXODisabling fixed media
device
0xB2 O X O O X X O X Detecting the presence of
a fixed media device (hard
drive detection, and so on)
0xB3 O X O O X X O O Enabling / configuring a
fixed media device
Removable Media
0xB8 O XOO OXXXResetting the removable
media device
0xB9 O X O O O X X O Disabling the removable
media device
0xBA O X O O O X O X Detecting the presence of
a removable media device
(CD-ROM detection, etc.)
0xBC O X O O O O X X Enabling / configuring a
removable media device
Table 8. Diagnostic LED POST Code Decoder