Asus ROG RAMPAGE VI EXTREME Manual page 30

10. PCIe x16 Lane switch (PCIEX16_SW)
These slide switches allows you to enable and disable the corresponding PCIe x16
slots. When one of the installed PCIe x16 cards is out of order, you can use the slide
switch to find the faulty one without removing the cards.
Chapter 1: Product Introduction
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