MSI A75A-G45 series User Manual page 32

Hardware Setup
S/PDIF-Out Connector: JSP1
Ths connector s used to connect S/PDIF (Sony & Phlps Dgtal Interconnect Format)
nterface for dgtal audo transmsson.
* The MB layout n ths figure s for reference only.
S/PDIF-Out Bracket (optonal)
Seral Port Connector: JCOM1
Ths connector s a 16550A hgh speed communcaton port that sends/receves 16
bytes FIFOs. You can attach a seral devce.
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