User Guide
Page 79
... then plug them to the power source. 10 Turn on all peripheral devices and then the computer. Do not force the memory module into the slot in the open slot. If you want to install only one memory module, be sure to insert the connector edge of the memory module into place.... ! Be sure to use the lower slot. Do not touch any other components on the module with the small projection in a wrong orientation, as it clicks into the slot while aligning the notch on the motherboard...
... then plug them to the power source. 10 Turn on all peripheral devices and then the computer. Do not force the memory module into the slot in the open slot. If you want to install only one memory module, be sure to insert the connector edge of the memory module into place.... ! Be sure to use the lower slot. Do not touch any other components on the module with the small projection in a wrong orientation, as it clicks into the slot while aligning the notch on the motherboard...