Sitecom USB 2.0 to VGA Adapter
 

This is a handy little gadget indeed. If you have a normal desktop PC, you'd be better off buying a cheapy PCI card on Ebay and connecting your second monitor to that. For a laptop or other small PC where internal expansion is limited, or you want to easily swap a second monitor between PC's, this is ideal. There are some quirks, but it's a simple way to connect another monitor to your PC and for the most part it works well.

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