H81h3-a3 user manual, Chapter 2 – Elitegroup H81H3-A3 (V1.0) User Manual
Page 21
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Chapter 2
17
H81H3-A3 USER MANUAL
The motherboard has two USB 2.0 headers supporting four USB 2.0 ports. Addition-
ally, some computer cases have USB ports at the front of the case. If you have this
kind of case, use auxiliary USB connector to connect the front-mounted ports to the
motherboard.
3. F_USB1~2: Front Panel USB 2.0 headers
Please make sure that the USB cable has the same pin assignment as indi-
cated above. A different pin assignment may cause damage or system hang-
up.
4. COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a serial port to your
system.
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