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- 1). Connect your speakers into your laptop using a headphone, 3.5-mm jack. This is the easiest way to use if you do not have any speakers on your projector, or if you prefer to use your own computer speakers.
- 2). Plug the 3.5-mm side of the jack into your laptop's headphone jack and the RCA audio end into your projector. Make sure to match the red prong with the red jack and white prong with white jack. This is the best method to use if your projector only have RCA audio connections.
- 3). Plug one end of the 3.5-mm cable into your laptop's headphone jack and the other 3.5-mm cable into the projector's 3.5-mm input jack if your projector supports a 3.5-mm input cable.
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