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Technical Reference Guide
Compaq Deskpro 4000N and 4000S Personal Computers
First Edition -September
2-9
NOTES:
CD models only.
[1] Deskpro 4000S only.
Figure 2–6. Compaq Deskpro 4000N and 4000S System Architecture, Block diagram
Microprocessor
and Cache Memory
North
Bridge
64-Bit Host Bus
South
Bridge
32-Bit
PCI Bus 0
Pri.
IDE I/F
USB
I/F (2)
System
Memory
Mem. Bus
Power
Supply
Sec.
IDE I/F
Graphics
Subsystem
PC 87307 I/O Controller
Diskette
I/F
Keyboard/
Mouse I/F
Serial
I/F
(
2
)
Parallel
I/F
PCI Connector
EIDE
Hard Drive
CD-ROM
8-/16-Bit
ISA Bus
EIDE
Hard Drive
ISA Connector
[
1
]
BIOS
ROM
X-Bus