Asus PRIME X370-A Manual page 13

10. USB 2.0 connectors (10-1 pin USB3~6)
These connectors are for USB 2.0 ports. Connect the USB module
cable to any of these connector, then install the module to a slot
opening at the back of the system chassis. These USB connectors
comply with USB 2.0 specifications and supports up to 480Mbps
connection speed.
Never connect a 1394 cable to the USB connectors. Doing so
will damage the motherboard!
11. 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.
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. 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].
ASUS PRIME X370-A
USB34
PIN 1
COM
PIN 1
SPDIF_OUT
AAFP
PIN 1
HD-audio-compliant Legacy AC'97
pin definition compliant definition
1-5