![](/images/new-backgrounds/1153271/153271183x1.webp)
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| Specifications |
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System interrupt specifications |
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| Hardware IRQ | System function |
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| IRQ1 | Standard |
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| IRQ4 | ITE consumer infrared (CIR) receiver |
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| IRQ12 | Synaptics PS/2 Port TouchPad |
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| IRQ13 | Numeric data processor |
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| IRQ14 | ATA channel 0 |
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| IRQ15 | ATA channel 1 |
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| IRQ16 | |
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| IRQ16 | Standard OpenHCD USB host controller |
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| IRQ16 | Standard OpenHCD USB host controller |
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| IRQ17 | SDA standard compliant SD host controller |
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| IRQ17 | Standard enhanced PCI to USB host controller |
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| IRQ18 | Standard OpenHCD USB host controller |
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| IRQ18 | Standard OpenHCD USB host controller |
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| IRQ18 | WLAN adapter |
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| IRQ19 | |
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| IRQ19 | Realtek RTL8103 Family |
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| IRQ19 | Standard enhanced PCI to USB host controller |
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| IRQ22 | Standard AHCI 1.0 serial ATA controller |
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| IRQ23 |
✎ This table contains default values. The actual resource allocation is determined by the operating system.
System I/O address specifications
I/O address (hex) | System function (shipping configuration) | |
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000 | - 00F | Direct memory access controller |
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000 | - CF7 | PCI bus |
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010 | - 01F | Motherboard resources |
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020 | - 021 | Programmable interrupt controller |
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02E - 02F | Motherboard resources | |
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040 | - 043 | System timer |
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060 | - 060 | Standard |
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061 | - 061 | System speaker |
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062 | - 062 | Microsoft |
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064 | - 064 | Standard |
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066 | - 066 | Microsoft |
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070 | - 071 | System |
(Continued)
Maintenance and Service Guide |