Download Abit IS-20 User`s manual

Table Of Contents
Chapter 1.
1.1.
1.2.
1.3.
Chapter 2.
2.1.
2.2.
2.3.
2.4.
Introduction .................................................... 1-1
Features & Specifications....................................................... 1-1
Layout..................................................................................... 1-3
Jumpers & Connectors Description........................................ 1-4
Hardware Setup.............................................. 2-1
Install The Motherboard......................................................... 2-1
Install Pentium® 4 CPU and Heatsink Supporting-Base........ 2-2
System Memory ..................................................................... 2-3
2.3.1. Memory Configuration Table ................................... 2-3
2.3.2. Installing and Removing Memory Modules............. 2-4
Connectors, Headers, and Switches ....................................... 2-5
2.4.1. ATX Power Connectors............................................ 2-5
2.4.2. FAN Power Connectors............................................ 2-6
2.4.3. CMOS Memory Clearing Header............................. 2-7
2.4.4. AGP Display Card Slot (IS-10/IS-11/IS-12)............. 2-8
2.4.5. Front Panel Switches & Indicators Connection
Headers ..................................................................... 2-9
2.4.6. Front Panel Audio Connection Header................... 2-10
2.4.7. Additional USB Port Connection Headers ............. 2-11
2.4.8. System Management Bus Connection Header ....... 2-12
2.4.9. Additional IEEE1394 Port Connection Headers
(IS-12) ..................................................................... 2-13
2.4.10. Internal Audio Source Connectors ......................... 2-14
2.4.11. Floppy and IDE Disk Drive Connectors................. 2-15
2.4.12. Serial ATA Connectors........................................... 2-16
2.4.13. CPU Core Voltage Selector .................................... 2-17
2.4.14. External I/O Panel Connectors ............................... 2-18
User’s Manual