Compaq dc5850 - Microtower PC Technical Reference Guide

Technical Reference Guide www.hp.com 4-15
System Support
4.6.2 GPIO Functions
SB700 Functions
The SB700 South Bridge provides various functions through the use of programmable general
purpose input/output (GPIO) ports. These systems use GPIO ports and associated registers of the
for the following functions:
■ Chassis and board ID
■ Front audio/USB detect
■ SPI data I/O
■ SATA hard drive LED
■ Flash security override
■ Serial port (COM 2) detect
SIO Controller Functions
In addition to the serial and parallel port functions, the SIO controller provides the following
specialized functions through GPIO ports:
■ Power/hard drive LED control for indicating system events (refer to Table 4-8)
■ Chassis and CPU fan control (PWM)
■ PCI Wake control
■ Power On/Power Good control
■ Power supply fan control

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