Asus Maximus VI Extreme Manual page 64

13. DirectKey connector (2-pin DRCT)
This connector is for the chassis-mounted button that supports the DirectKey function.
Connect the button cable that supports DirectKey, from the chassis to this connector on
the motherboard.
Ensure that your chassis comes with the extra button cable that supports the DirectKey
feature. Refer to the technical documentation that came with the chassis for details.
14 mPCIe Combo II connector (52-pin MPCIE_COMBO_II)
This connector is for the mPCIE Combo II card offers expandability solutions that also
features the M.2 (NGFF) slot for optimal system performance.
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