Compaq 8000 Technical Reference Guide: HP Compaq 8000 Elite Series Business De - Page 23

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 2-4 shows the functions provided by the support components. Table 2-4 Support Component Functions Component Name Function WPCD376H SIO Controller Keyboard and pointing device I/F Serial I/F (COM1and COM2) [2] Parallel I/F (LPT1, LPT2, or LPT3) [3] 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 82567LM Network Interface 10/100/1000 Fast Ethernet network interface controller. 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 NOTES: [1] Not used in USDT form factor. [2] Com1 supported only on SFF and CMT form factors. COM2 requires external bracket/cable assembly. [3] Supported only on SFF and CMT form factors, 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-, 1066, and 800-MHz memory modules. The USDT system provides two SODIMM sockets supporting up to eight gigabytes of memory while the SFF and CMT form factors provide four UDIMM sockets and support a total of 16 gigabytes of memory. ✎ 1333-MHz memory modules are clocked down to 1066 megahertz ✎ SODIMM and DIMM components are NOT interchangeable. Technical Reference Guide www.hp.com 2-7