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Chapter 2
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X77H2-A3 USER MANUAL
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.
This Motherboard implements one USB 3.0 header supporting 2 extra front USB 3.0
ports, which delivers 5Gb/s transfer rate.
1. USB3F: Front Panel USB 3.0 header
2. CASE: Chassis Intrusion Detect Header
This detects if the chassis cover has been removed. This function needs a chassis
equipped with instrusion detection switch and needs to be enabled in BIOS.