Manual

Chapter 2
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H81H3-M5 USER MANUAL
7. COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a serial port to your
system.
This is an optional header that provides an SPDIFO (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
8. SPDIFO: SPDIF out header