12-10-2006, 10:59 PM
I think you are talking about VGA rather than Serial.
Your dongle is likely a MiniVGA-VGA cable

Is it this?

If so you need a VGA cable to connect to the projector.
The other option is to get the Apple MiniVGA-Video which allows you to use either s Video or RCA (Composite)

If you need sound--these are video only.
Your dongle is likely a MiniVGA-VGA cable

Is it this?

If so you need a VGA cable to connect to the projector.
The other option is to get the Apple MiniVGA-Video which allows you to use either s Video or RCA (Composite)
If you need sound--these are video only.