New Mac Mini Monitor adaptor doesn't fit.....

The large end of the DVI adapter is called "DVI-D". You need a standard DVI-D cable. A DVI-I cable won't plug into the adapter.

DVI-D is the most common DVI cable type, but it sounds like you have a DVI-I cable.

Just to add to what bsteely said, in case anyone comes here looking for this info, this also means that you can't just slap a DVI-to-VGA adapter on the end of the DVI adapter that comes with the 2009 Mini. DVI-D does not carry analog video. If you need to hook a VGA monitor to your 2009 Mini, you'll need to get a MiniDVI-to-VGA adapter instead.

OtherWorld computing (OWC) - I think also called MacConnection.
They are about $25 and a few bucks shipping/handling. Just got mine - works great in my new MiniMac.

I have a somewhat related question, what exactly is the DisplayPort connection in the Mac Mini? Is this an alternative to DVI for connecting your monitor to the computer?

Yes, DisplayPort is a newer industry standard that is expected to replace DVI over the long haul. It has a number of advantages over DVI but most of them don't apply today with respect to the monitors available in the market. In the future, computer monitors may make better use of its advanced capabilities.

So I would say today that it is pretty much a coin toss which interface you use on the new mini to drive a monitor. Of course with some monitors, like the Apple 24" Cinema, you have to use DisplayPort.

I've got a new Mac Mini and am having trouble hooking up an LG monitor (non-Mac).
The monitor has a DVI-D slot and a D-sub slot. What kind of adapter cord do I need to make it work? I tried a DVI-VGA one, which is what one guy at BestBuy told me I needed, but it doesn't work.
Thanks for any help.

Yeah I think someone posted not long ago that they tried using one of the common dvi-i to vga adapters, that come with most retail videocards these days, by cutting out the 4 extra pins and that it still didn't work LOL!
This page explains why you can't just cut out the extra pins and expect it work and pretty good pics of all the different types of DVI(duallink vs singlelink etc):
http://www.cablestogo.com/resources/dvi.asp

p.s. If you have a macbook pro or know somebody that does maybe they'll give you or sell their mini-dvi to vga adapter since I guess some older models used to or maybe still ship with them?
Only reason you really need one anyways it to connect to older vga monitors or kvm switch is what I want one for.

Message was edited by: davi angel

Hey, thanks for all the help.
Apple phone support said I needed a Mini DVI to a Mini DVI cord, but BestBuy didn't have any at the store I was at. Plus, the product description doesn't say Mac Mini, just MacBook, etc.

I got a regular DVI to DVI cord which doesn't exactly match the pins (has one set on both sides with some missing in the middle, while the Mac cord has holes for all pins).

Whatever - the monitor works with it, so I presume it's OK.

Thanks for the help. I appreciate it.