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Specification Update, 2006: Intel® 82801DBM I/O Controller Hub 4 Mobile (ICH4-M), clarifications, changes, and documentation errata.
Spec Update, 2007: Intel® 855GM/GME Chipset Graphics and Memory Controller Hub (GMCH) clarifications, changes, and documentation errata.
Design Guide Update, 2006: Intel® Pentium® M Processor and Intel® 855PM DDR 266/200 MHz Chipset Platform Design Guide.
The Intel® 855 chipset family is part of Intel® Centrino® processor technology and is designed to deliver great performance at lower power.
Design Guide Update: Intel® Pentium® M Processor and Intel® 855GM Chipset platform design, schematic, layout, routing, and documentation changes.
Datasheet: Intel® 82801DBM I/O Controller Hub 4 Mobile (ICH4-M).