The AmpliVox Pinnacle Multimedia Lectern has a Gooseneck Mic (Maple) that installs on the cable mounted in the shock mount on the reading table. That cable is prewired to the bottom of the unit where you plug in an XLR cable to the house PA system (not included). The LED Lamp is powered by an AC power adapter that is plugged into an outlet strip mounted inside the unit on the bottom, which has its plug mounted in the bottom side of the unit. You plug in the supplied power cord from the base of the unit to house AC. The clock/timer is battery operated (LR44 Watch Batteries, not included). The batteries can be replaced by pulling the clock out of the panel. The batteries are in the back of the timer.