Asus A88X-PLUS Owner's Manual page 13

10. Serial port connector (10-1 pin COM)
This connector is for a serial (COM) port. Connect the serial port
module cable to this connector, then install the module to a slot
opening at the back of the system chassis.
11. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio
I/O module that supports either HD Audio or legacy AC`97
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.
• If you want to connect a high-definition front panel
audio module to this connector, set the Front Panel
Type item in the BIOS setup to [HD]. If you want to
connect an AC'97 front panel audio module to this
connector, set the item to [AC97]. By default, this
connector is set to [HD].
12. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/
PDIF) port. Connect the S/PDIF Out module cable to this connector,
then install the module to a slot opening at the back of the system
chassis.
13. PCI slots
The PCI slots support cards such as LAN card, SCSI card, USB card, and other cards
that comply with the PCI specifications.
14. PCI Express 3.0/2.0 x16 slots
This motherboard supports two PCI Express 3.0/2.0 x16 graphic cards that comply with
the PCI Express specifications.
VGA configuration
Single VGA/PCIe card
Dual VGA/PCIe cards
ASUS A88X-PLUS/USB 3.1
PCI Express operating mode
PCIe 3.0 / 2.0 x16_1 (gray)
x16 (Recommended for single
VGA card)
x16
COM
PIN 1
AAFP
PIN 1
HD-audio-compliant Legacy AC'97
pin definition compliant definition
SPDIF_OUT
PCIe 2.0 x16_2
N/A
x4
1-5