I don't have my 770 anymore (brother ran off with it when I got my N800 and I haven't seen it since), but I'm tempted to say probably not. From what I recall the 770 didn't put out any power on the USB port and actually had to have external power fed into it to make it activate host mode (or something odd like that). So theoretically if you had a powered hub and jury-rigged some connections it could work, but certainly not just plug-and-play like with the N8x0's. (Anyone else got more information on this?)

Snoshrk, afraid I've not heard of an RJ45 swivel adapter. To be honest with you I don't know how much stress it would actually take off of the RJ45 jack on the laptop anyways because it would still have to be plugged in and sticking out as much as a regular RJ45 mod end to work. About the only thing I can suggest would be a retractable RJ45 cable and a female/female adapter. The retractable cable uses very thin/flexible wiring so would make the best option, but you need the female/female if you're going to connect it to an existing patch cord rather than a wall jack as the cable only comes in male mod end to male mod end configuration (like a regular data patch cord).

Thanks,
-Rob