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10 SBC-455 User's Manual
Jumpers and connectors
Connectors on the board link it to external devices such as hard
disk drives, a keyboard, or floppy drives. In addition, the board has
a number of jumpers that allow you to configure your system to
suit your application.
The table below lists the function of each of the board jumpers and
connectors:
Jumpers and connectors
Label Function
JP2 CPU voltage select
JP1,3,4 CPU type select
JP11 COM port IRQ and Parallel port DRQ/DACK
select
JP5 LCD clock signal select
JP7 LCD enabled signal select
JP6 Watchdog out select
JP9, 10 CPU clock select
JP12 Clear CMOS
JP8 Flash BIOS Protect
JP13 Flash BIOS Write-enable Voltage
Primary IDE Enhanced IDE connector
Floppy disk FDD connector
Printer Parallel port connector
LCD LCD panel connector
COM B Serial port 2
RESET SW Reset Switch
EXT SPK Ext. speaker
KEY LOCK Power LED and KB lock
TURBO SW Turbo Switch
SMI SW SMI Switch
POWER CON Power connector
IDE LED IDE LED
TURBO LED Turbo LED
COM A Serial port 1
VGA VGA connector
KB CON External keyboard connector
KB/PS2 MOUSE Keyboard or PS/2 mouse connector
J1,2 PC/104 module connector
SIMM1,2 DRAM module socket