S UPER P4SDA+/P4SDM User’s Manual 200 MHz Memory Bus Pentium 4 CPU DDR SDRAM 400 MHz Host Bus 82845 MCH 4xAGP PCI Slots ATA100 Ports LAN ICH2 USB Ports 133 MB/s PCI Bus Flash BIOS FWH Figure 1-5. 845 Chipset: System Block Diagram Note: This is a general block diagram and may not exactly represent the features on your motherboard. See the follow- ing pages for the actual specifications of each motherboard. 1-10