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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 external bracket/cable assembly.
[2] Requires external bracket/cable assembly.
2.3.4 System Memory
These systems implement a dual-channel Double Data Rate (DDR3) memory architecture. All
models support DDR3 1333-MHz (PC3-10600) and 1066-MHz (PC3-8500) memory modules.
The CMT, MT, and SFF form factors provide four UDIMM sockets and support a maximum of
16 gigabytes of memory. The USDT form factor provides two SODIMM sockets and supports up
to eight gigabytes of memory.
Table 2-3
Support Component Functions
Component Name Function
Nuvoton SIO11 Controller Keyboard and pointing device 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
Intel 82579 LOM Network
Interface Controller
10/100/1000 Fast Ethernet network interface controller.
ALC261 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