User’s Manual

1-4
9. USB 3.2 Gen 1 header
The USB 3.2 Gen 1 header allows you to connect a USB 3.2 Gen
1 module for additional USB 3.2 Gen 1 ports. The USB 3.2 Gen 1
header provides data transfer speeds of up to 5 Gb/s.
The USB 3.2 Gen 1 module is purchased separately.
10. USB 2.0 headers
The USB 2.0 headers allow you to connect USB modules for additional USB
2.0 ports. The USB 2.0 headers provide data transfer speeds of up to 480
Mb/s.
DO NOT connect a 1394 cable to the USB connectors. Doing so will
damage the motherboard!
The USB 2.0 module is purchased separately.
11. Clear CMOS header
The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM
in the CMOS, which contains the date, time, system passwords, and system
setup parameters.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to
re-enter data.
DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or
placing a jumper cap will cause system boot failure!
If the steps above do not help, remove the onboard battery and short the two pins again to
clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
12. COM Port header
The COM (Serial) Port header allows you to connect a COM port module.
Connect the COM port module cable to this header, then install the module to
a slot opening on the system chassis.
The COM port module is purchased separately.
USB3+5V
IntA_P1_SSRX-
IntA_P1_SSRX+
GND
IntA_P1_SSTX-
IntA_P1_SSTX+
GND
IntA_P1_D-
IntA_P1_D+
GND
PIN 1
USB3+5V
IntA_P2_SSRX-
IntA_P2_SSRX+
GND
IntA_P2_SSTX-
IntA_P2_SSTX+
GND
IntA_P2_D-
IntA_P2_D+
PIN 1
USB+5V USB_P1- USB_P1+ GND NC
USB+5V
USB_P2-
USB_P2+
GND
CLRTC
+3V_BAT GND
PIN 1
PIN 1
RXD
DTR
DSR
CTS
COM
DCD
TXD
GND
RTS
RI
VBUS
TX1+
TX1-
GND
RX1+
RX1-
VBUS
CC1
NC
NC
CC2
D+
D-
GND
RX2-
RX2+
GND
TX2-
TX2+
VBUS
Chapter 1: Product Introduction