Computer workstation includes a mounting bracket for attachment to a wall, and a cabinet connected to the mounting bracket. A track, attached to the cabinet, is engaged with the mounting bracket to vertically guide the cabinet. A non-contacting sensor detects a computer operator. An input device tray is rotatably connected to the cabinet, and has i) an operating position that holds computer input device(s) in an input position and ii) a stowed position substantially preventing access. First electromagnet selectively retains the tray in the stowed position. Second electromagnet selectively retains the tray in the operating position. An electronic lock control panel accepts authentication input from the operator. An electronic lock control module, in a lockable compartment of the cabinet, is connected to the lock control panel and the sensor. The lock control module separately controls electric current flow through the electromagnets in response to authentication by the lock control module.