Ports Vga Usb
Can USB port of laptop be used to connect projector to the laptop?Or is there a need for a separate VGA port?
Is a VGA port comulsory for hooking up a projector to my laptop?Can I connect it to my USB port?
You need some video output, usually it's a separate VGA port on the back of the laptop.
You can buy USB to VGA video adapters, that have Windows drivers and can then drive an external VGA display...
A look at what is currently available on eBay
 1 PC to 2 Monitor VGA Video Splitter Box 2 Port w/ USB US $13.99 
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 4 Port USB Automatic KVM VGA Switch Audio Switcher US $58.73
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 4 VGA Type B USB Input Ports PC Audio KVM Switch Box US $42.86
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 Iogear 2-Port Compact USB VGA KVM with Built-in Cables US $17.00
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 4 Port USB KVM PC Keyboard Video Monitor VGA Switch Box Blue US $42.61
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 Automatic USB 4 Port KVM VGA Switch Audio Switcher US $59.15
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 Belkin Flip 2-Port KVM Switch w/ Audio USB VGA US $20.00
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 USB 2.0 KVM 2 Port Ports Selector VGA Print Switch Box US $22.18
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 USB 2.0 KVM Switch Box VGA/VGA2 Monitor 2 Port Selector US $12.69
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