ASUS X99-M WS Manuel D’Utilisation

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Chapter 1: Product introduction
Chapter 1
1.2.9 
Internal connectors
1. 
Serial port connector (10-1 pin COM1)
This connector is for the serial (COM) port. Connect the serial port module cable to one 
of these connectors, then install the module to a slot opening at the back of the system 
chassis.
2. 
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect 
the S/PDIF Out module cable to this connector, then install the module to a slot 
opening at the back of the system chassis.
The S/PDIF module is purchased separately.