Compaq dc5850 - Microtower PC Technical Reference Guide

Technical Reference Guide www.hp.com 4-13
System Support
The RPM (speed) of all fans is the result of the temperature of the CPU as sensed by speed
control circuitry. The fans are controlled to run at the slowest (quietest) speed that will maintain
proper cooling.
Units using chassis and CPU fans must have both fans connected to their corresponding headers
to ensure proper cooling of the system.
4.6 Register Map and Miscellaneous Functions
This section contains the system I/O map and information on general-purpose functions of the
SB700 South Bridge and SIO controller.
4.6.1 System I/O Map
Table 4-8 lists the fixed addresses of the input/output (I/O) ports.

Compaq dc5850 - Microtower PC Specifications

General

Memory	Up to 8 GB DDR2 SDRAM
Form Factor	Microtower
Audio	Integrated High Definition audio
Power Supply	300W
Processor	AMD Athlon X2, AMD Athlon, AMD Sempron
Storage	SATA 3.0 Gb/s Hard Drives
Graphics	Integrated ATI Radeon 3100 graphics
Optical Drive	DVD-ROM, DVD+/-RW
Operating System	Windows Vista
Expansion Slots	1 PCI Express x16, 2 PCI Express x1
Network	Integrated Gigabit Ethernet
Ports	1 serial, 1 parallel, 1 VGA, 1 RJ-45, audio in/out