He's confused. He doesn't really know what he's talking about. 8x transfers require the 1.5V signalling. Other than that-
Most cards will handle both voltages. The ones that don't are keyed so that they won't fit in a slot they can't handle the voltage from.
Most cards will handle both voltages. The ones that don't are keyed so that they won't fit in a slot they can't handle the voltage from.
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