Chapter 2 Hardware Setup153. The plastic clip at each side of the DIMM slot will automatically close.Important DDR3 memory modules are not interchangeable with DDR2 and theDDR3 standard is not backwards compatible. You should always in- stallDDR3 memory modules in the DDR3 DIMM slots. To enable successful system boot-up, always insert the memory modulesinto the DIMM1 first.Power Supply24-Pin Power Connector: JPWR1This connector allows you to connect an 24-pin power supply. To connect the24-pin power supply, make sure the plug of the power supply is inserted in theproper orientation and the pins are aligned. Then push down the powersupply firmly into the connector.4-Pin Power Connector: JPWR2This 12V power connector is used to provide power to the CPU.ImportantMake sure that all the connectors are connected to proper ATX power