Elitegroup Z87H3-A2X GOLDEN (V1.0) - Manual (Page 27)

Chapter 2
21
Z87H3-A2X EXTREME (GOLDEN) 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.
8. SPDIFO: SPDIF Out Header
This is an optional header that provides an SPDIFO (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.