MSI 745 ULTRA User Guide - Page 23

Hardware Setup DDR Module Combination You can install either single-sided or double-sided 184-pin DDR DIMM modules into DDR DIMM slots to meet your needs. Different from the SDR DIMM, the DDR DIMM has only one notch on the center of module. The number of pins on either side of the breaks are different. The module will only fit in the right orientation. You can install memory modules in any combination as follows: Slot Momory Module Slot 1 64MB, 128MB, 256MB, 512MB, 1GB Slot 2 64MB, 128MB, 256MB, 512MB, 1GB Slot 3 64MB, 128MB, 256MB, 512MB, 1GB Maximum System Memory Supported Total Memory 64MB~1GB 64MB~1GB 64MB~1GB 64MB~3GB Installing DDR Modules 1. The DDR DIMM has only one notch on the center of module. The module will only fit in the right orientation. 2. Insert the DIMM memory module vertically into the DIMM slot. Then push it in. Volt notch 3. The plastic clip at each side of the DIMM slot will automatically close. 2-5