About Your Computer 31SpecificationsNOTE: Offerings may vary by region. For more information regarding theconfiguration of your computer, click Start→ Help and Support and select theoption to view information about your computer.9 Rear Quad USB2.0 connectors(4)Use the back USB connectors for devices that typicallyremain connected, such as printers and keyboards.NOTE: It is recommended that you use the front USBconnectors for devices that you connect occasionally, such asflash memory keys or cameras, or for bootable USB devices.10 serial connector Connect a serial device, such as a handheld device, to theserial port. The default designations are COM1 for serialconnector 1 and COM2 for the optional serial connector 2.For more information, see "System Setup Options" onpage 82.11 keyboardconnectorIf you have a PS/2 keyboard, plug it into the purple keyboardconnector. If you have a USB keyboard, plug it into a USBconnector.ProcessorMicroprocessor types Intel® Core™ 2 Duo processorsIntel Core 2 Quad processorsIntel Core 2 Extreme processorsCache 1 MB minimum up to 12 MB (depending onyour processor)System InformationChipset Intel X38 Express Chipset/ICH9RData bus width 64 bitsAddress bus width 32 bitsDMA channels eightInterrupt levels 24BIOS chip (NVRAM) 8 Mb
