Certainly not the first to conjure up such wares, Gefen is hopping in the USB display adapter game with its own USB-to-DVI adapter. The unit supports screen resolutions up to 1,600 x 1,200 and plays nice with all 32-bit versions of Windows as well as OS X. As you're probably well aware, up to a half dozen of these critters can be connected to a single PC at a time, and any attempt to use seven or more will likely cause a catastrophic meltdown. Unfortunately, these things are still a tad pricey, and even Gefen's will set you back a stiff $129. Full release posted after the jump (which affirms OS X support).

Gefen Adapter Gives HD Access Through USB Port

CHATSWORTH, CA – A new USB to DVI Graphics Adapter from Gefen offers a handy way to connect additional displays to all Windows XP and Vista operating systems available today, and now for Mac OS X as well.

This tiny adapter allows a plug and play connection of a DVI or VGA display to any USB 2.0 port so you can add digital video displays or projectors to your laptop and personal computer for simultaneous video delivery without needing a DVI port. Output video is delivered in the DVI-I format, allowing for either VGA or DVI display compatibility.

The Gefen USB to DVI Graphics Adapter (MSRP $129) enables users to tweak their video performance, offering a variety of screen resolutions up to 1600x1200. These built-in features ensure video performance is of a similar quality as the main display connected through the DVI port.

Users also have the option of having the USB connected display mirror the main display or extend the desktop to provide increased visibility and the ability to view several applications at the same time in a multiple display situation. Testing has shown that up to six USB to DVI Graphics Adapters can be connected to any one personal computer with a reliable delivery of video to all six displays.

Details and complete specifications are available here:
http://www.gefen.com/kvm/product.jsp?prod_id=4517

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About Gefen:

Gefen delivers advanced technologies with multi-platform extension, switching, distribution and conversion capabilities. Gefen equipment is valued around the world in professional A/V, information technology and consumer electronics/home theater environments. Their add-on hardware maximizes functionality by enabling systems to operate beyond their original capabilities. A selection of high quality cabling is also available. Visit www.gefen.com for detailed product information.

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Gefen's USB-to-DVI adapter handles UXGA