Asus A7S266-VM U2 A7S266-VM/U2 User Manual - Page 21

1.9 Expansion slots The A7S266-VM/U2 motherboard has four (4) expansion slots. The following subsections describe the slots and the expansion cards that they support. 1.9.1 Configuring an expansion card After physically installing the expansion card, configure the card by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. 2. Assign an IRQ to the card. Refer to the tables below. 3. Install the software drivers for the expansion card. 1.9.2 Standard Interrupt Assignments IRQ Standard Function 0 System Timer 1 Keyboard Controller 2 Programmable Interrupt Controller 3* Communications Port (COM2) 4* Communications Port (COM1) 5* Onboard LAN 6 Standard Floppy Disk Controller 7* Printer Port (LPT1) 8 System CMOS/Real Time Clock 9* USB Host Controller 10* Onboard Audio 11* Onboard VGA 12* PS/2 Compatible Mouse Port 13 Numeric Data Processor 14* Primary IDE Controller 15* Secondary IDE Controller *These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard A B C D E F G H PCI slot 1 shared PCI slot 2 - used - - - - - - PCI slot 3 - - used - - - - - PCI slot 4 - - - shared - - - - Onboard USB controller HC0 - - - - used - - - Onboard USB controller HC1 - - - - - used - - Onboard USB controller HC2 used - Onboard USB controller HC3 used Onboard LAN - - - shared - - - - Onboard Audio shared Onboard VGA shared When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between two PCI groups. ASUS A7S266-VM/U2 Motherboard 1-11