Processor	80486DX (on external CPU/Memory module)
Processor Speed	25/33MHz
Chip Set	AST
Max. Onboard DRAM	None (16MB on external CPU/Memory module)
SRAM Cache	None
BIOS	AST
Dimensions	330mm x 218mm
I/O Options	32-bit external CPU/Memory module slot, 32-bit external Memory module slot (2), floppy drive interface, IDE interface, parallel port, serial port (2), SMART expansion/16-bit ISA expansion slots (3)
NPU Options	4167 (on external CPU/Memory module)

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1 (COM1)	CN1	External battery	P8
Parallel port	CN2	IDE interface	P11
IDE interface LED	J14	SMART expansion/16-bit ISA	S1, S2 & S3
Serial port 2 (COM2)	P2	32-bit external CPU/Memory module	S4
Floppy drive interface (A: and B:)	P3	32-bit external Memory module slot	S5
Third floppy drive interface	P4	32-bit external Memory module slot	S6
Front panel switches & LEDs	P5	Optional ROM (even)	U12
Speaker	P6	Optional ROM (odd)	U38

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Password check enabled	E1	pins 2 & 3 closed
	Password check disabled	E1	pins 1 & 2 closed
»	POST select normal operation	E2	open
	POST select continuous loop	E2	closed
»	Keyboard select installed	E3	open
	Keyboard select not installed	E3	closed

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Parity check enabled	E1	closed
	Parity check disabled	E1	open
Note:AST CPU/Memory module part number is 202361-002, 202361-005, or 202361-006 for 25MHz systems or 202361-004 or 202361-007 for 33MHz systems.

DRAM CONFIGURATION
Size	Bank 0	Bank 1
2MB	(2) 1M x 9	NONE
4MB	(2) 1M x 9	(2) 1M x 9
8MB	(2) 4M x 9	NONE
10MB	(2) 1M x 9	(2) 4M x 9
16MB	(2) 4M x 9	(2) 4M x 9
Notes:128KB of DRAM is reserved for System and VGA BIOS shadowing and cannot be disabled. Up to two of the following memory boards may be installed in addition to the CPU/Memory module: AST part numbers 202275-002, 202275-004, 202275-006, 202387-001, or 202387-005.