ASRock H61M-DG3/USB3 manual

CAUTION!

1.Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows® 7 / VistaTM / XP. For Windows® OS with 64-bit CPU, there is no such limitation. You can use ASRock XFast RAM to utilize the memory that Windows® cannot use.

2.ASRock XFast RAM is not supported by Microsoft® Windows® XP / XP 64-bit.

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