Hi Adam, Anything is of course possible with computers.<smile> Yes indeed, I did put the switch back in its proper place, but I'm not upset with you for asking because I made that mistake when I first got my unit a little over 6 months ago. I have always used this unit in serial mode, no matter which operating system, I just have the USB cable that came with the unit plugged in for the power useage of the computer. At school, however, I use the AC adapter because it was easier to deal with because there aren't many usb ports on my school computer. The usb cable I use is the one that came with the unit, and it has only been used with the Dectalk and no other device. The serial cable is not a normal serial cable so I don't have a spare cable to try unfortunately. Yes, I do have a Braille display, brltty has been working with Fedora just fine but I would rather have speech.<smile> Thanks, Beth