40 CHAPTER 5: INSTALLING ADDITIONAL OR REPLACEMENT COMPONENTSAurora-R2Recommended memory configuration:Type Slots1066 MHz and I333 MHz DDR3 Slots 1 and 2 or slots 1 — 4To replace memory module(s):Aurora/Aurora ALXRecommended memory configuration:Type Slots1066 MHz and I333 MHz DDR3 Slots 1, 3, and 5 or slots 1 — 61600 MHz XMP Slots 1, 3, and 5