Hi there. I was actually Googling for some information regarding using the MF626 for sending a FAX and I found this post.
http://www.geekzone.co.nz/forums.asp?forumid=39&topicid=53853
I use a ZTE MF626 with Snow Leopard on my Mac. However I know some people have had issues with it so I blogged about it. Admittedly my modem came from T-Mobile in the UK so the issues may be different but I thought the information may help!
http://www.cyberspice.org.uk/blog/2009/10/19/life-with-t-mobile-a-3g-modem-and-a-g1/
Melanie
