ASROCK X38TURBOTWINS, Installation Manual, Page: 15 / 200

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ASRock X38TurboTwins-WiFi / X38TurboTwins Motherboard
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3. If a pair of memory modules is NOT installed in the same Dual
Channel, for example, installing a pair of memory modules in
DDR3_A1 and DDR3_B2, it is unable to activate the Dual Channel
Memory Technology.
4. It is not allowed to install a DDR3 memory module into DDR2 slot
or install a DDR2 memory module into DDR3 slot; otherwise, this
motherboard and DIMM may be damaged.
5. DDR2 and DDR3 memory modules cannot be installed on this
motherboard at the same time.
6. To have the best performance with DDR3 1600 XMP memory
modules, it is suggested to install one memory module on each
channel. For example, install them in the set of green slots
(DDR3_A1 and DDR3_B1) or in the set of pink slots (DDR3_A2
and DDR3_B2).
Installing a DIMM Installing a DIMM
Installing a DIMM Installing a DIMM Installing a DIMM
Please make sure to disconnect power supply before adding or
removing DIMMs or the system components.
Step 1. Unlock a DIMM slot by pressing the retaining clips outward.
Step 2. Align a DIMM on the slot such that the notch on the DIMM matches the break
on the slot.
The DIMM only fits in one correct orientation. It will cause permanent
damage to the motherboard and the DIMM if you force the DIMM into the slot
at incorrect orientation.
Step 3. Firmly insert the DIMM into the slot until the retaining clips at both ends fully
snap back in place and the DIMM is properly seated.