the sdio does not work with the 700m.
the TI chipset in the 700m is sdio capable, but for some reason, maybe not enough juice or something, it doesn't work. i was informed by dell that it should work, as well as talked to TI about the chipset.
as far as bluetooth solutions, i am using a 3com pc card which is great. others are using zoom, and i know some folks that are using the CF + pc card adapter. the 3com and the cf + pc card are flush, where the zoom sticks out just a hair
the problem with the dongle for certain people like me is that i want something that i do not have to worry about breaking off or having to remove and insert every time.
another negative on the sdio was that it stuck out 1/2 inch and it being very thin wasn't practical, might as well just go with the usb dongle.
i had just talked to someone who had the socket sdio which is the same thing as the toshiba sdio since toshiba makes it. he had gotten his to work on a differnt computer. i think more playing around would have found a work around solution. considering that my 3com needed some work around to work with bluetooth manager software, i'm thinking that the sdio card may have been more a software driver issue. from re-reading toshiba's data on the sdio, it does require software support which exists for the sdio. so i'm thinking you need the right software. if i still had it, i would try to work around i have for the 3com pc card that i have. but like i said, i would not have kept it anyways, b/c it stuck out too much to be safe