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Specifications
Maintenance and Service Guide 6–7
System interrupt specifications
Hardware IRQ System function
IRQ1 Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
IRQ4 ENE CIR Receiver
IRQ12 Alps Pointing-device(2-way) for 14-In Wide LCD
IRQ13 Numeric data processor
IRQ16 High Definition Audio Controller
IRQ16 PCI standard PCI-to-PCI bridge
IRQ16 Standard OpenHCD USB Host Controller
IRQ16 Standard OpenHCD USB Host Controller
IRQ17 PCI standard PCI-to-PCI bridge
IRQ17 Standard Enhanced PCI to USB Host Controller
IRQ18 Broadcom 4322AG 802.11a/b/g/draft-n Wi-Fi Adapter
IRQ18 PCI standard PCI-to-PCI bridge
IRQ18 Standard OpenHCD USB Host Controller
IRQ18 Standard OpenHCD USB Host Controller
IRQ19 High Definition Audio Controller
IRQ19 PCI standard PCI-to-PCI bridge
IRQ19 Realtek PCIe FE Family Controller
IRQ19 Standard Enhanced PCI to USB Host Controller
IRQ22 Standard AHCI 1.0 Serial ATA Controller
IRQ23 HP Mobile Data Protection Sensor
IRQ81-190 Microsoft ACPI-Compliant System