Asus M4A78 PLUS - Motherboard - ATX User Manual page 37

5. USB connectors (10-1 pin USBE12, USBE34, USB910)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480 Mbps connection speed.
M4A78 PLUS
M4A78 PLUS USB2.0 connectors
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
6. Serial port connectors (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port bracket (COM1) is purchased separately.
M4A78 PLUS
M4A78 PLUS Serial port (COM1) connector
Chapter 1: Product introduction
USBE12 USBE34
PIN 1 PIN 1
USB910
PIN 1
COM1
PIN 1
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