I think it could be useful adding an option to make Dolphin opens the new media (a USB pendrive, for instance) in a new tab, instead of new window, in order to avoid having several windows of Dolphin opened at the same time. If the user needs to copy some files from HD to USB, it's handlier if both folders are in two tabs than in two windows. Thanks!
*** This bug has been marked as a duplicate of bug 183429 ***