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Technical Reference Guide www.hp.com 2-7
System Overview
2.3.3 Support Components
Input/output functions not provided by the chipset are handled by other support components.
Some of these components also provide “housekeeping” and various other functions as well.
Table 2-3 shows the functions provided by the support components.
NOTE:
[1] COM2 requires optional bracket/cable assembly.
[2] LPTn support requires optional bracket/cable assembly.
2.3.4 System Memory
These systems implement a dual-channel non-ECC Double Data Rate (DDR2) memory
architecture. All models support DDR2 800- and 667-MHz DIMMs, and are shipped with DDR2
800-MHz (PC2-6400) DIMMs. These systems provide four DIMM sockets and support a total of
8 gigabytes of memory.
✎
DDR and DDR2 DIMMs are NOT interchangeable.
Table 2-3
Support Component Functions
Component Name Function
SCH5327 SIO Controller Keyboard and pointing device I/F
Diskette I/F
Serial I/F (COM1and COM2) [1]
Parallel I/F (LPT1, LPT2, or LPT3) [2]
PCI reset generation
Interrupt (IRQ) serializer
Power button and front panel LED logic
GPIO ports
Processor over temperature monitoring
Fan control and monitoring
Power supply voltage monitoring
SMBus and Low Pin Count (LPC) bus I/F
Broadcom BMC5754
Network Interface Controller
10/100/1000 Fast Ethernet network interface controller.
AD1884A HD Audio Codec Audio mixer
Two digital-to-analog stereo converters
Two analog-to-digital stereo converters
Analog I/O
Supports stereo (two-channel) audio streams