4-2 System BoardThis section describes the locations of connectors, jumpers, and sockets on thesystem board, including external cable connectors, internal board connectors,jumper locations, and upgrade sockets.Included in this section are procedures for setting jumpers on the system boardand a DIMM memory upgrade path for the DIMM sockets. Also included aredescriptions of system board components, component pin assignments, systemmemory map, and I/O addresses.Connectors, Jumpers, and SocketsThe following paragraphs describe the system board external cable connectorlocations, internal board connector locations, jumper locations, and upgradesockets. Included are procedures for setting jumpers on the system board and atable showing the upgrade path for the DIMM sockets.External Cable ConnectorsLocations of the external cable connectors on the system board at the back of thesystem unit are shown in the following figure. For descriptions of theconnectors, see Section 1, “System Overview.”System Board External Cable Connector LocationsA – Shared PCI/ISA Slot B – PCI Slot C – Power Supply Fan D – LAN ConnectorE – Audio Connectors F – USB Connectors G – Mouse Port H – Keyboard PortI – Serial Port J – Parallel Port K – VGA Connector