Multi-port USB serial cable

Hi all,

For the single zImage demo @ Connect, our tentative plan is to have multiple boards connected to a single host so we can just have one monitor displaying multiple console sessions and then run 'uname -a' to show that the kernels are the same (this will not win any awards for visual appeal). I don't want to spend a week trying to get a driver to work so looking for suggestions on specific brands of USB multi-port serial adapters that are known to 100% work with Linux. As in you've tried it, maybe own one (hey, how about your bring it with you?!), and it worked, not as in "I read on google that it should work" :).

Thanks, ~Deepak