...because we can't all be on the bleeding edge...





US486 P3

QDI COMPUTER, INC.

US486 P3

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

25/33/40/50(internal)/50/66(internal)MHz

Chip Set

UMC

Maximum Onboard Memory

128MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

250mm x 220mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Function

Label

Function

Label

External battery

J2

Speaker

JP12

Reset switch

JP9

Power LED & keylock

JP13

Turbo switch

JP10

32-bit VESA local bus slots

SL1 - SL3

Turbo LED

JP11

   

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Jumper information unavailable

JP4

N/A

DRAM

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

None

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

None

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

None

128MB

(4) 16M x 9

(4) 16M x 9

CACHE SIZE

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

None

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER

Size

JP1

JP2

JP3

JP5

32KB

Open

Open

Open

Open

64KB

Closed

Open

Open

Open

128KB

Closed

Closed

Open

Pins 2 & 3 closed

256KB

Closed

Closed

Closed

Pins 1 & 2 closed

CPU TYPE

Setting

JP6

JP7

JP8

JP14

80486SX

2 & 3

Open

Open

1 & 2

80487SX

1 & 2, 3 & 4

1 & 2

Open

1 & 2

80486DX-25/33

1 & 2, 3 & 4

2 & 3

Open

1 & 2

80486DX-40/50

1 & 2, 3 & 4

2 & 3

Closed

2 & 3

80486DX2

1 & 2, 3 & 4

2 & 3

Open

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED

Setting

JP15

JP16

JP17

25MHz

Open

Open

Closed

33MHz

Closed

Open

Open

40MHz

Closed

Closed

Open

50iMHz

Open

Open

Closed

50MHz

Open

Closed

Open

66iMHz

Closed

Open

Open