Table 1-10. Functional Structure HP OmniBook XE2 Product Information 1-13 Bootup CPU module Motherboard BIOS IC Floppy disk module Hard disk drive Main processor (MMO). Primary system circuitry. Code for basic system functions. First source of disk-based startup code. Second source of disk-based startup code. Processor CPU module Motherboard Main processor, numeric data processor, L1 and L2 cache. Primary system circuitry. Memory RAM board Optional, additional RAM. Power Battery Motherboard AC adapter Power storage. AC adapter socket, power switch, lid switch, system-off switch, power supply. AC-to-DC converter. Display Motherboard LCD module Inverter PCA PCMCIA/zoomed video controller.
Display output, backlight. Power converter for backlight. Hard disk drive Motherboard Hard disk drive Hard disk controller. Hard disk mechanism. Floppy disk drive Motherboard Floppy disk module Floppy disk controller. Floppy disk mechanism. Keyboard Motherboard BIOS IC Keyboard Keyboard controller. Keyboard BIOS. Key switches. Pointer Motherboard Touch pad Keyboard controller. Touch pad sensor, controller (PS/2 output). Audio Motherboard LED PCA Speakers Audio controller, speaker amplifier, headphone amplifier, zoomed video controller, mute switch. External audio jacks. Speakers. Status Motherboard LED PCA Keyboard controller. Power LEDs. Serial Motherboard Modem PCA I/O controller.
Serial connector. Parallel Motherboard Modem PCA I/O controller Parallel connector. Infrared Motherboard LED PCA I/O controller. Infrared transmitter/receiver. PS/2 port Motherboard LED PCA Keyboard controller, PS/2 processor PS/2 connector. USB Motherboard LED PCA Bus controller (South Bridge) USB connector. Docking port Motherboard Docking logic, docking connector. PCMCIA Motherboard PCMCIA socket PCMCIA controller. PCMCIA connectors.