Well, according to the box, it is model 1171 (which is a 28.8 Sportster Voice box with a little 'Now with 33.6 Kbps data' splash graphic in the lower right hand corner). The modem isn't installed at the moment, so I can't check the s/n with the method you suggest, Pretty Cool, but if this info. isn't enough. let me know and I'll install the dang thing! On the product sticker that is affixed to the card itself the s/n reads like this: 0011710063252823. If you've got the files I need to upgrade it, I'd be much obliged. TIA.