$49.99 at  
JR.com  
Buy it Now

HP NL571AT USB Graphics Adapter

$51.24 at  
Buy.com  
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HP USB to DVI Graphics Multiview Adapter- Smart Buy USB

$51.99 at  
TheNerds.net  
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HP USB to DVI Graphics Multiview Adapter

$59.00 at  
PCRush.com  
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HP USB to DVI Graphics Multiview Adapter - NL571AT

I purchased this to set up a dual-monitor system at my work computer. I wanted something cheap and portable so I could take it with me at the end of the day, but no dice with this on Ubuntu. It -is- possible to get a usb-based videocard working on there, but there are several hoops to jump through that are neither easy nor especially reliable. This is not a fault of this particular USB video card, but ALL of them from what I've seen. Time to just buy a low profile card...