to the cart frame 20 by a mounting plate 89 and fasteners 91 a 91 b the release member 80 is formed with internal threads 96 which engage the lead screw 94 whereby rotation of the output shaft 92 in a first direction causes the release member 80 to move toward the second position of the lock core 42 likewise rotation of the output shaft 92 in an opposite direction causes the release member 80 to move in a direction toward the first position of the lock core 42 the drive motor 90 is coupled by wires 98 to a power supply not shown and a control circuit 100 see fig2 of the medical cart 10 when a user enters an appropriate access code via a keypad 102 or other input device coupled to the control circuit 100 the control circuit 100 energizes the drive motor 90 to move the release member 80 and thereby unlock or lock the cart 10 as described more fully below in the embodiment show in fig2 control circuit 100 is supported within the enclosure 14 by a support bracket 106 secured to frame 20 a protective cover 108 may be provided on support bracket 108 to protect the control circuit 100 from moving components of the cart 10 a secondary control circuit 101 may be provided to receive input from the keypad 102 or other user input device and to communicate with control circuit 100 when a valid access code has been entered while the user input device has been shown and described herein as a keypad 102 for entering an access code it will be recognized that.