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I have been doing Power Point presentations on our work projector which is a Sharp XR-30X, using my Dell laptop. The computer input for the projector is a 15 pin socket label'd as:

COMPUTER/ 21 COMPONENT 22 input terminal Terminal for computer
RGB and component signals.
My Dell did have such a socket and I could connect with a double ended plug cable but I have now gone on to a MacBook Pro which doesn't have this 15 pin outlet
Can someone advise how best to connect to this socket please? I assume I need an adapter to connect either my HDMI or USB output to this socket?

COMPUTER/ 21 COMPONENT 22 input terminal Terminal for computer
RGB and component signals.
My Dell did have such a socket and I could connect with a double ended plug cable but I have now gone on to a MacBook Pro which doesn't have this 15 pin outlet
Can someone advise how best to connect to this socket please? I assume I need an adapter to connect either my HDMI or USB output to this socket?