Adding and replacing system board components 7-3The system board, sometimes called the planar or motherboard, is the main circuitboard in the system unit. It supports a variety of devices and provides other basiccomputer functions that are preinstalled or that you can install later. The systemboard shown on the previous page has the following parts:Power connector.Memory module sockets (for DIMMs). Your system board has two 168-pin sockets for Dual Inline Memory Modules (DIMMs). The DIMM socketssupport 3.3V single-or double-sided Synchronous DRAM (SDRAM). Themaximum system memory is 256MB (64 megabit technology) or 512MB(128 megabit technology) SDRAM.Floppy Disk connector.Hard Disk Connector (IDE1 & IDE2).Battery.Case connector. Power Switch, Power LED, Speaker and HDD LED areall connected to this connector block.Clear CMOS jumper.PCI adapter card connector. This is the first PCI adapter card connector.PCI adapter card connector. This is the second PCI adapter cardconnector.PCI adapter card connector. This is the third PCI adapter cardconnector.Modem-In connector.Aux Line In connector.CD-In connector.Audio Port connector.Serial Port connector 1.VGA Port Connector.Parallel Port Connector.Serial Port connector 2 (Optional).Universal Serial Bus Port.Mouse and Keyboard connector.1234568789101112131415161719181920
