Asus P I-P65UP5 C-PKND User Manual - Page 20

III. INSTALLATION (Expansion Cards) III. INSTALLATION 4. Expansion Cards First read your expansion card documentation on any hardware and software settings that may be required to setup your specific card. NOTE: PCI Slot 5 has a MediaBus extension 2.0 (see page 16) which allows the installation of a PCI card or a MediaBus card (optional multifunctional card) but not both. WARNING: Make sure that you unplug your power supply when adding or removing expansion cards. Failure to do so may cause severe damage to both your motherboard and expansion cards. Expansion Card Installation Procedure: 1. Read the documentation for your expansion card. 2. Set any necessary jumpers on your expansion card. 3. Remove your computer system's cover. 4. Remove the screw and bracket on the slot you intend to use. 5. Carefully align the card's connectors and press firmly. 6. Secure the card on the slot using the same screw from the bracket. 7. Replace the computer system's cover. 8. Setup the BIOS if necessary (such as "IRQ xx Used By ISA: Yes" in PNP AND PCI SETUP) 9. Install the necessary software drivers for your expansion card. Assigning IRQs for Expansion Cards IMPORTANT: PCI Slots 4 & 5 share the same IRQ. If using PCI cards on both slots 4 & 5, make sure that the drivers support "Share IRQ" or that one card does not need an IRQ assignment. Conflicts will arise on PCI Slots 4 & 5 that will make the system unstable. Some expansion cards need to use an IRQ to operate. Generally an IRQ must be exclusively assigned to one use. In an standard design there are 16 IRQs available but most of them are already in use by parts of the system which leaves 6 free for expansion cards. Both ISA and PCI expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are then used by PCI cards. Currently, there are two types of ISA cards. The original 14 ASUS P/I-P65UP5 User's Manual