COMPAQ COMPUTER CORPORATION

DESKPRO 4000N, 4000S

Device Type	Mainboard
Processor	Pentium MMX
Processor Speed	166/200/233MHz
Chip Set	VIA
Video Chip Set	S3
Maximum Onboard Memory	256MB (SDRAM supported)
Maximum Video Memory	2MB
Cache	256KB
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	Ethernet AUI connector, Ethernet 10BaseT connector, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, USB connectors (2), ATX power connector, CD-ROM interface, LS-120 connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
ATX power connector	ATX	Floppy drive interface	J1
VGA port	CN1	Audio connector	J11
PS/2 mouse port	CN2	External battery	P14/pins 9 - 12
Ethernet AUI connector	CN3	Ethernet AUI connector	P15
Ethernet 10BaseT connector	CN4	Power cable/LED connector	P16
Serial port	CN5	IDE interface 1	P20
Serial port	CN6	LS-120 connector	P21
Parallel port	CN7	CD-ROM interface	P25
USB connector	CN8	Riser slot	SL1
USB connector	CN9

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	CMOS memory normal operation	P14/pins 1 & 2	Closed
	CMOS memory clear	P14/pins 1 & 2	Open
	Password enabled	SW1/1	Off
	Password disabled	SW1/1	On

DIMM CONFIGURATION
Size	Bank 0	Bank 1
8MB	(1) 1M x 64	None
16MB	(1) 2M x 64	None
16MB	(1) 1M x 64	(1) 1M x 64
24MB	(1) 2M x 64	(1) 1M x 64
32MB	(1) 4M x 64	None
32MB	(1) 2M x 64	(1) 2M x 64
40MB	(1) 4M x 64	(1) 1M x 64
48MB	(1) 4M x 64	(1) 2M x 64
64MB	(1) 8M x 64	None
64MB	(1) 4M x 64	(1) 4M x 64
72MB	(1) 8M x 64	(1) 1M x 64
80MB	(1) 8M x 64	(1) 2M x 64
96MB	(1) 8M x 64	(1) 4M x 64
128MB	(1) 16M x 64	None
128MB	(1) 8M x 64	(1) 8M x 64

DIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1
136MB	(1) 16M x 64	(1) 1M x 64
144MB	(1) 16M x 64	(1) 2M x 64
160MB	(1) 16M x 64	(1) 4M x 64
192MB	(1) 16M x 64	(1) 8M x 64
256MB	(1) 16M x 64	(1) 16M x 64
Note: Board accepts SDRAM memory.

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

VIDEO MEMORY CONFIGURATION

Note: The location of the video memory is unidentified.

CPU SPEED SELECTION
CPU speed	Clock speed	Multiplier	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6
166MHz	66MHz	2.5x	On	On	Off	On	Off
200MHz	66MHz	3x	Off	On	Off	On	Off
233MHz	66MHz	3.5x	Off	Off	Off	On	Off

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DESKPRO 4000N, 4000S, motherboard, processor, socket, pentium, pentium pro, celeron, powerpc, alpha, 8088, 8086, 286, 386, 486, configuration, RAM, DRAM, floppy, jumper, connections