That's what I was looking for.
The same occasionally occurs with video cards and PCI cards made for ATX (standard) towers, but just don't physically fit in slim-line machines.
I don't like the idea of recommending a cut-and-bend procedure for you, but I'll bet that has crossed your mind.
( consider it "not recommended" )
Instead, lets see if we can find a slim-line form-fitting PCI Modem card (low Profile) at a reasonable price.
I wonder if that's why they didn't include a modem card???
I'll do some searching, and I recommend you do too.
Maybe at
NewEgg.com
TigerDirect.com
ZipZoomFly.com
TomsHardware.com
Others may have additional recommended sites.
use search term: PCI Modem low profile
Here's one that might work:
http://www.tigerdire...e...1&CatId=563
*** I would call them by phone to discuss before buying.
Ask them about form fitting features suitable for your specific machine.
Also ask them about return policy on this item.