iPone to DVI

the iPhone 4 only supports up to 720p output for digital video or 1024x768 (4:3) with the VGA adapter.

but why would you want some unsanctioned adapter that costs MORE than Apple's adapter? that's ridiculous.

http://store.apple.com/us/product/MC953ZM/A?fnode=MTc0MjU4NjE&mco=MTcyMTgxNTk

Apple's displays up to 720p with an HDMI connector (get a cheap DVI adapter or DVI to HDMI cable if you need it), has a dock connector pass-thru port to simultaneously charge, and is $20 cheaper than the knock-off you posted.

i'm very curious as to what features this DVI adapter you linked to provides that Apple's adapter doesnt have.