EVGA 170-BL-E762 - Manual (Page 39)

EVGA X58 SLI CLASSIFIED Motherboard
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The red wires should be occupying the pins on the top row.
Now, access the Disable/Enable Function at the front of the Control Panel:
From right to left, the PCIE Disable will disable slots 2,3,4,5. When jumper is in
top position, PCIE slot is enabled. When in bottom position PCIE slot is
disabled.