These connections allow an iPod to be connnected to the receiver using a special cable or dock, and the XM Radio Connection allows the connection of an XM Tuner/Antenna (paid subscription required for program access).
Yamaha RX-V861 7.1 Channel Home Theater Receiver - XM Radio and iPod Connections
By Robert Silva, About.com Guide
Yamaha RX-V861 7.1 Channel Home Theater Receiver - XM Radio and iPod Connections
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