Asus Prime Z370-P II, User Manual

Page: 26 / 80

1-12
Chapter 1: Product Introduction
Chapter 1
5. USB 3.1 Gen 1 connectors (20-1 pin U31G1_12; U31G1_34)
These connectors allow you to connect a USB 3.1 Gen 1 module for additional USB
3.1 Gen 1 front or rear panel ports. With an installed USB 3.1 Gen 1 module, you can
enjoy all the benefits of USB 3.1 Gen 1 including faster data transfer speeds of up to
5 Gb/s, faster charging time for USB-chargeable devices, optimized power efficiency,
and backward compatibility with USB 2.0.
6. 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.
The USB 3.1 Gen 1 module is purchased separately.
The COM module is purchased separately.
The plugged USB 3.1 Gen 1 device may run on xHCI or EHCI mode depending on the
operating system’s setting.
U31G1_12
USB3+5V
IntA_P1_SSRX-
IntA_
GND
IntA_P1_SSTX-
IntA_
GND
IntA_P1_D-
In
GND
PIN 1
USB3+5V
IntA_P2_SSRX-
IntA_
GND
IntA_P2_SSTX-
IntA_
GND
IntA_P2_D-
In
U31G1_34
PRIME Z370-P II USB 3.1 Gen 1 connectors
A
B
A B
PIN 1
GND
In IntA_P1_D-
GND
IntA_ IntA_P1_SSTX-
GND
IntA_ IntA_P1_SSRX-
USB3+5V
In IntA_P2_D- GND IntA_ IntA_P2_SSTX- GND IntA_ IntA_P2_SSRX- USB3+5V
PIN 1
COM
DCD TXD GND RTS
RI
RXD DTR DSR CTS
PRIME Z370-P II Serial port (COM) connector