Hp DC5850 Instrukcja Użytkownika Strona 49

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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
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