Whether you want a full-time Caps Lock key or simply need the keyboard shortcut, here's how to do it.

If you are in either situation, you can follow this tutorial to turn on or off Shift Lock for Touch keyboard. For your information, you can enable Shift Lock by clicking on the Shift key twice.

Aluminum Keyboard Firmware Update 1.0 (#3): caps lock problems; keys registering slowly; more Key repeat rate settings may be to blame.