Sony PCG-R505JSP - Manual (Page 58)

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4 Press the key combination Fn + F7 to change the display to projector.
Using the docking station
1 Locate the Monitor port, identified by the symbol, on the rear panel of
the docking station.
2 Plug the optional monitor adapter into this Monitor port.
Connecting projector
Projector
Power cord
RGB signal cable
To Headphones
Audio cable