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Motherboard layout ............................................................... 1 2. Central Processing Unit (CPU).............................................. 2 Installing the CPU.................................................................. 2 3. System memory .................................................................... 3 Installing a DIMM................................................................... 3 4. Expansion slots ..................................................................... 4 Standard interrupt assignments ............................................ 4 IRQ assignments for this motherboard.................................. 4 PCI slots ................................................................................ 5 AGP slot ................................................................................ 5 5. Jumpers................................................................................. 6 6. Connectors ............................................................................ 8 Product Name: A7N8X-LA Focus Manual Revision: E1317 V1 Release Date: May 2003 ii A7N8X-LA (Focus) specifications summary CPU Socket A for AMD Athlon™/Athlon XP™ Supports up to Athlon XP™ 3200+ Chipset nVidia nForce2 400 SPP nVidia MCP-T Front Side Bus (FSB) 400/333/266 MHz Memory 2 x 184-pin DDR DIMM sockets for up to 2GB memory Supports PC2700/PC2100 double-sided DDR Expansion slots 1 x AGP 8X slot 3 x PCI slots IDE 2 x UltraDMA100/66/33 connectors, PIO Mode 3/4 Supports ATAPI IDE, CD-ROM, CD-R, CD-RW and LS-120 Onboard Audio RealTek ALC650 6-channel audio CODEC subsystem AC’97 2.2 compliant Onboard LAN Realtek 8201BL LAN PHY supports 10/100 Mbps Onboard IEEE 1394 Agere FW802C PHY supports 2 x 1394 ports with 400/200/100Mbps data transfer rate Hardware monitoring Super I/O integrated monitoring of CPU and chassis fan rotations and CPU/chassis temperature Special features Wakeup on Ring, LAN, Keyboard, PS/2 Mouse, RTC Timer Supports ACPI STR (S3) function Restart/Off Setup of AC recovery from power failure Rear panel I/O 1 x Parallel port 1 x Serial port 1 x PS/2 keyboard port 1 x PS/2 mouse port 4 x USB 2.0 ports 1 x RJ-45 port 1 x IEEE 1394 port Line In/Line Out/Microphone ports Internal I/O 1 x USB 2.0 connector for 2 additional USB ports 1 x IEEE 1394 connector for additional 1394 port CPU/chassis fan connectors 20-pin ATX power connectors S/PDIF out connector CD/AUX audio connectors Front headphone connector Front MIC-IN connector (Continued next page) A7N8X-LA (Focus) specifications summary BIOS features 4Mb Flash ROM, AMI BIOS with Enhanced ACPI, DMI, Green, PnP features Industry Standard USB 2.0/1.1, PCI 2.2 Form factor MicroATX form factor: 9.6 in x 9.6 in (24.5 cm x 24.5 cm) * Specifications are subject to change without notice 1. Motherboard layout 24.5cm (9.64in) IDE1 FLOPPY1 A7N8X-LA/Focus nVIDIA MCP-T Chipset Accelerated Graphics Port (AGP8X1) nVidia nForce2 400 SPP ChipsetATX Power Connector Super I/O 4Mb BIOS PCI 1 PS/2T: Mouse B: Keyboard Realtek RTL8201 CHA_FAN1 Agere 1394 PHY PCI 2 PCI 3 Audio Codec Below:Mic In Center:Line Out Top:Line In DDR DIMM1 (64/72 bit, 184-pin module) 01 DDR DIMM3 (64/72 bit, 184-pin module) 4 5 Socket 462 24.5cm (9.64in) CPU_FAN1 RJ-45 Top: USB1 USB2 Bottom: IDE2 1394 Top: USB1 USB2 Bottom: CLRTC1 BUZZ1 BAT1 J11 USB56 HPANEL IEEE1394_1 CD1 AUX1 FP_MIC1 HJACK1 ASPDIF1 COM1 PARALLEL PORT ASUS A7N8X-LA (Focus) Motherboard 2. Central Processing Unit (CPU) The motherboard provides a Socket A (462) for CPU installation. AMD processors offer gigahertz speeds to support all latest computing platforms and applications. The A7N8X-LA supports AMD Athlon™/Athlon XP™ 3200+ processors. This motherboard supports 400/333/266MHz front side bus (FSB), and allows data transfers of up to 2.7GB/s with PC2700 DDR. Each AMD CPU has a “marked” corner. This corner is usually indicated with a notch and/or a golden square or triangle. Refer to this indicator while orienting the CPU. A fan and a heatsink should be attached to the CPU to prevent overheating. A7N8X-LA/Focus A7N8X-LA/Focus Socket 462 CPU NOTCH TO INNER CORNER LOCK LEVER CPU NOTCH AMD™ CPU Installing the CPU Follow these steps to install a CPU. 1. Locate the Socket 462 and open it by pulling the lever gently sideways away from the socket. Then lift the lever upwards. The socket lever must be fully opened (90 to 100 degrees). 2. Insert the CPU with the correct orientation. The notched or golden corner of the CPU must be oriented toward the inner corner of the socket base nearest to the lever hinge. The CPU fits only in one correct orientation. DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU! ASUS A7N8X-LA (Focus) Motherboard 3. System memory The motherboard comes with two Double Data Rate (DDR) Dual Inline Memory Module (DIMM) sockets. These sockets support up to 2GB system memory using 184-pin unbuffered non-ECC PC2700/PC2100 double-sided DDR DIMMs. The following figu...