selector channel - a type of input/output channel that is electrically connected to only a single device, such as a disk or tape drive, at a time, and performs high-speed data transfers between that device and the central processing unit. ;
дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://www.harcourt.com/dictionary/def/9/1/5/5/9155000.html;