POWERBOARD 55SX Motherboard Settings and Configuration

Processor	80486SX2/80486DX2/80486DX4
Processor Speed	25/33/50(internal)/66(internal)/100(internal)MHz
Chip Set	IBM
Max. Onboard DRAM	64MB
Cache	None
BIOS	Reply
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, 32-bit MCA riser card, parallel port, PS/2 mouse port, serial port, VGA port
NPU Options	Unidentified

CONNECTIONS
Purpose	Location	Purpose	Location
Drive power	CN1, CN2	IDE interface connector	J16
PS/2 mouse port	J2	Floppy drive interface	J18
Parallel port	J3	Speaker	J23
Serial port	J4	32-bit MCA riser card	S1
VGA port	J5

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	J7	pins 2 & 3 closed
	CMOS memory clear	J7	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
12MB	(1) 2M x 36	(1) 1M x 36	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	NONE
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36	NONE
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
24MB	(1) 4M x 36	(1) 2M x 36	NONE	NONE
28MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
28MB	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36	NONE
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
36MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
36MB	(1) 8M x 36	(1) 1M x 36	NONE	NONE
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 2M x 36	NONE
40MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	NONE
40MB	(1) 8M x 36	(1) 2M x 36	NONE	NONE
44MB	(1) 4M x 36	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
44MB	(1) 8M x 36	(1) 2M x 36	(1) 1M x 36	NONE
48MB	(1) 4M x 36	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	NONE
48MB	(1) 8M x 36	(1) 4M x 36	NONE	NONE

DRAM CONFIGURATION (CONT.)
Size	Bank 0	Bank 1	Bank 2	Bank 3
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
52MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 1M x 36
52MB	(1) 8M x 36	(1) 4M x 36	(1) 1M x 36	NONE
56MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 2M x 36
56MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
56MB	(1) 8M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
56MB	(1) 8M x 36	(1) 4M x 36	(1) 2M x 36	NONE
60MB	(1) 8M x 36	(1) 4M x 36	(1) 2M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36
64MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	NONE
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE

MISCELLANEOUS TECHNICAL NOTE

Note: J19 switches CPU frequency, exact configuration information is unidentified.