Asus MAXIMUS VIII EXTREME User Manual page 59

5. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
HD Audio standard. Connect one end of the front panel audio I/O module cable to this
connector.
We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard's high-definition audio capability.
6. U.2 connector (U.2)
This motherboard comes with a U.2 connector which supports PCIe 3.0 x4 NVM
Express storage.
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