HP OmniBook 500 Reference Manual page 159

Reference Information
Hardware Specifications
Major ICs Computer:
CPU: Intel Mobile Pentium III or Celeron processor.
South Bridge: PIIX4M.
Display controller: ATI Mobility M or M1.
Audio controller: ESS Maestro-3 and ESS ES1921.
CardBus controller: TI PCI 1410.
Keyboard/embedded controller: National NS87570.
Super I/O: National NS97338.
Expansion base:
Embedded controller: National NS87570.
PCI IDE controller: CMD PCI-648.
Audio controller: OZ163.
Reference Guide 159