Lenovo ThinkPad i Series 1157 ThinkPad 570 User's Reference - Page 173

Using the security screw Using the security screw You can use the security screw shipped with your computer to prevent devices, such as a hard disk drive, from being removed easily. Security screw To replace the coin screw with the security screw, do as follows: 1 Power off the computer; then disconnect the AC Adapter and all cables from the computer. 2 Remove the screw with a coin; then install the security screw and tighten it with a 2.5-mm allen wrench. 3 Connect the AC Adapter; then power on the computer. Chapter 3. Protecting your computer 157