Processor	80486SX/ODP486SX/CX486DX/AM486DX/80486DX/UMCU5S/CX486DX2/ CX486DX2V/AM486DX2/(SL)AM486DX2/80486DX2/P24D/AM486DX4/ 80486DX4/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/83(internal)/ 100(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	128MB
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	250mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	CN1	IDE interface LED 2	JP15
Serial port 1	CN2	Green PC LED	JP27
Serial port 2	CN3	Green PC connector	JP29
Parallel port	CN4	Turbo switch	JP35
Game port	CN5	Turbo LED	JP36
IDE interface 2	CN6	Speaker	JP37
IDE interface 1	CN7	Reset switch	JP44
External battery	JP12	Power LED & keylock	JP45
IDE interface LED 1	JP14	32-bit PCI slots	PC1 - PC3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP13	pins 1 & 2 closed
	CMOS memory clear	JP13	pins 2 & 3 closed
»	PCI bus clock select CPU clock speed	JP21	pins 1 & 2 closed
	PCI bus clock select 1/2 CPU clock speed	JP21	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(1) 256K x 36	NONE	NONE	NONE
2MB	(1) 256K x 36	(1) 256K x 36	NONE	NONE
2MB	(1) 512K x 36	NONE	NONE	NONE
3MB	(1) 512K x 36	(1) 256K x 36	NONE	NONE
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 512K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
4MB	(1) 1M x 36	NONE	NONE	NONE
4MB	(1) 512K x 36	(1) 512K x 36	NONE	NONE
5MB	(1) 1M x 36	(1) 256K x 36	NONE	NONE
5MB	(1) 512K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	NONE
6MB	(1) 512K x 36	(1) 1M x 36	NONE	NONE
6MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	NONE
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
8MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
9MB	(1) 2M x 36	(1) 256K x 36	NONE	NONE
10MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	NONE
10MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	NONE
10MB	(1) 512K x 36	(1) 2M x 36	NONE	NONE
11MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 2M x 36	NONE	NONE
12MB	(1) 2M x 36	(1) 1M x 36	NONE	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
14MB	(1) 512K 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) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
17MB	(1) 4M x 36	(1) 256K x 36	NONE	NONE
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	NONE
18MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	NONE
18MB	(1) 512K x 36	(1) 4M x 36	NONE	NONE
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 4M x 36	NONE	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
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
26MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
28MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
28MB	(1) 4M x 36	(1) 1M 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) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
33MB	(1) 8M x 36	(1) 256K x 36	NONE	NONE
34MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	NONE
34MB	(1) 512K x 36	(1) 4M x 36	(1) 4M x 36	NONE
34MB	(1) 512K x 36	(1) 8M x 36	NONE	NONE
35MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	NONE
36MB	(1) 1M x 36	(1) 8M x 36	NONE	NONE
36MB	(1) 8M x 36	(1) 1M x 36	NONE	NONE
40MB	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36	NONE
40MB	(1) 2M x 36	(1) 8M x 36	NONE	NONE
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
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) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 8M x 36	NONE	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
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
50MB	(1) 512K x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
52MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
56MB	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
56MB	(1) 8M x 36	(1) 2M 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) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
64MB	(1) 16M x 36	NONE	NONE	NONE
65MB	(1) 16M x 36	(1) 256K x 36	NONE	NONE
66MB	(1) 16M x 36	(1) 256K x 36	(1) 256K x 36	NONE
66MB	(1) 512K x 36	(1) 8M x 36	(1) 8M x 36	NONE
66MB	(1) 512K x 36	(1) 16M x 36	NONE	NONE
67MB	(1) 16M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
68MB	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36	NONE
68MB	(1) 1M x 36	(1) 16M x 36	NONE	NONE
68MB	(1) 16M x 36	(1) 1M x 36	NONE	NONE
72MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	NONE
72MB	(1) 2M x 36	(1) 16M x 36	NONE	NONE
72MB	(1) 16M x 36	(1) 1M x 36	(1) 1M x 36	NONE
72MB	(1) 16M x 36	(1) 2M x 36	NONE	NONE
76MB	(1) 16M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
80MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	NONE
80MB	(1) 4M x 36	(1) 16M x 36	NONE	NONE
80MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
80MB	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36	NONE
80MB	(1) 16M x 36	(1) 4M x 36	NONE	NONE
88MB	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
96MB	(1) 8M x 36	(1) 16M x 36	NONE	NONE
96MB	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36	NONE
96MB	(1) 16M x 36	(1) 8M x 36	NONE	NONE
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	NONE
98MB	(1) 512K x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
100MB	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
104MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
112MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
112MB	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
128MB	(1) 16M x 36	(1) 8M x 36	(1) 8M x 36	NONE
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
128MB	(1) 16M x 36	(1) 16M x 36	NONE	NONE
Note: Board also accepts x 32 SIMMs.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	NONE	(1) 32K x 8
512KB (A)	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
512KB (B)	(4) 128K x 8	NONE	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K x 8

CACHE JUMPER CONFIGURATION
Size	JP17	JP18	JP19	JP20	JP25	JP26
128KB	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2
256KB (A)	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	1 & 2
256KB (B)	1 & 2	2 & 3	1 & 2	1 & 2	2 & 3	1 & 2
512KB (A)	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
512KB (B)	1 & 2	1 & 2	2 & 3	1 & 2	2 & 3	2 & 3
1MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP31	JP32	JP38	JP39
80486SX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
ODP486SX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
CX486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
AM486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
UMCU5S	pins 2 & 3 closed	Closed	N/A	pins 2 & 3 closed
CX486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
CX486DX2V	pins 1 & 2 closed	Open	pins 2 & 3 closed	pins 1 & 2 closed
AM486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
(SL)AM486DX2	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX2	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
P24D	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed
AM486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
P24T	pins 1 & 2 closed	Closed	N/A	pins 1 & 2 closed

CPU TYPE CONFIGURATION (CON’T)
Type	JP40	JP41	JP42	JP43
80486SX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
ODP486SX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 2 & 3 closed
CX486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
UMCU5S	pins 2 & 3 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
CX486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
CX486DX2V	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
(SL)AM486DX2	pins 1 & 2 closed	Closed	pins 2 & 3 closed	pins 1 & 2 closed
80486DX2	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
P24D	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
AM486DX4	pins 1 & 2 closed	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 1 & 2 closed
P24T	pins 1 & 2 closed	N/A	pins 1 & 2 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION (CON’T)
Type	J2	J3	J4	J5	J6	J7
80486SX	Closed	Open	Open	Open	Closed	Open
ODP486SX	Open	Closed	Open	Open	Closed	Open
CX486DX	Open	Closed	Open	Closed	Open	Open
AM486DX	Open	Closed	Open	Open	Closed	Open
80486DX	Open	Closed	Open	Open	Closed	Open
UMCU5S	Closed	Open	Open	Open	Closed	Open
CX486DX2	Open	Closed	Open	Closed	Open	Open
CX486DX2V	Open	Closed	Open	Closed	Open	Open
AM486DX2	Open	Closed	Open	Open	Closed	Open
(SL)AM486DX2	Open	Closed	Open	Open	Closed	Open
80486DX2	Open	Closed	Open	Open	Closed	Open
P24D	Open	Open	Closed	Open	Open	Closed
AM486DX4	Open	Closed	Open	Open	Closed	Open
80486DX4	Open	Closed	Open	Open	Closed	Open
P24T	Open	Open	Closed	Open	Open	Closed

CPU SPEED CONFIGURATION
Speed	JP22	JP23
25MHz	pins 2 & 3 closed	pins 2 & 3 closed
33MHz	pins 1 & 2 closed	pins 1 & 2 closed
40MHz	pins 1 & 2 closed	pins 2 & 3 closed
50iMHz	pins 2 & 3 closed	pins 2 & 3 closed
50MHz	pins 2 & 3 closed	pins 1 & 2 closed
66iMHz	pins 1 & 2 closed	pins 1 & 2 closed
75iMHz	pins 2 & 3 closed	pins 2 & 3 closed
80iMHz	pins 1 & 2 closed	pins 2 & 3 closed
83iMHz	pins 1 & 2 closed	pins 1 & 2 closed
100iMHz	pins 1 & 2 closed	pins 1 & 2 closed

DMA CONFIGURATION
DMA	JP1	JP2
DMA 1	pins 1 & 2 closed	pins 1 & 2 closed
DMA 3	pins 2 & 3 closed	pins 2 & 3 closed