D-Bracket™ 2 Connector: Jdb1 - MSI MS-7226 (V1.X) Manual

D-Bracket™ 2 Connector: JDB1
The mainboard comes with a JDB1 connector for you to connect to D-Bracket™ 2. D-
Bracket™ 2 is an external USB Bracket that supports both USB1.1 & 2.0 specs. It
integrates four LEDs and allows users to identify system problems through 16 vari-
ous combinations of LED signals.
2 10
1
9
Red
LED Signal
System Power ON
1 2
The D-LED will hang here if the
processor is damaged or not in-
3 4
stalled properly.
1 2
Early Chipset Initialization
3 4
Memory Detection T est
Testing onboard memory size. The
1 2
D-LED will hang if the memory mod-
3 4
ule is damaged or not installed
properly.
Decompressing BIOS image to RAM
1 2
for fast booting.
3 4
1 2
Initializing Keyboard Controller.
3 4
Testing VGA BIOS
1 2
This will start writing VGA sign-on
3 4
message to the screen.
Processor Initialization
1 2
This will show information regarding
3 4 the processor (like brand name, sys-
tem bus, etc...)
1 2
Testing RTC (Real Time Clock)
3 4
Connected to
JDB1
Connected to USB
connector
Green
Description
Hardware Setup
D-Bracket™ 2
LED Signal Description
Initializing Video Interface
1 2
This will start detecting CPU clock,
checking type of video onboard. Then,
3 4
detect and initialize the video adapter.
BIOS Sign On
1 2 This will start showing information
about logo, processor brand name,
3 4
etc...
Testing Base and Extended Memory
1 2
Testing base memory from 240K to
640K and extended memory above
3 4
1MB using various patterns.
1 2
Assign Resources to all ISA.
3 4
Initializing Hard Drive Controller
1 2
This will initialize IDE drive and
3 4
controller.
Initializing Floppy Drive Controller
1 2
This will initialize Floppy Drive and
3 4
controller.
Boot Attempt
1 2
This will set low stack and boot via
3 4
INT 19h.
1 2
Operating System Booting
3 4
(Optional)
1 2
LEDs
3 4
2-19