EVGA X99 - Audio; PCI-E X16;X8 Slot

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Audio
The audio connector supports HD audio standard and provides two kinds of audio
output choices: the Front Audio and the Rear Audio.
PCI-E x16/x8 Slot
This board has a single PCI-E 16x slot. This is specifically for a video card,
however you can place a different card there and use the Intel HD Graphics on the
CPU. When installing a PCI-E Graphics Card, be sure the retention clip snaps and
locks the card into place. If the card is not seated properly, it could cause a short
across the pins. Secure the card’s metal bracket to the chassis back panel with the
screw used to hold the blank cover.
Connector
Pin
Signal
Front Audio Connector
1
PORT1_L
2
AUD_GND
3
PORT1_R
4
PRECENCE_J
5
PORT2_R
6
SENSE1_RETURN
7
SENSE_SEND
8
Empty
9
PORT2_L
10
SENSE2_RETURN
9
7
5
3
1
10
8
6
4
2