A PS2 keyboard (106 Keys CtrlCaps) refers to a standard keyboard that connects to a computer via a PS/2 port, which is an older type of keyboard connection. The "106 Keys" usually refers to the number of keys on the keyboard, with "Ctrl" and "Caps" likely referring to the specific keys available, such as the Control and Caps Lock keys.

In most modern systems, PS/2 keyboards work out of the box on Windows without needing additional drivers, as Windows includes built-in support for standard keyboards. However, in some cases, you might need to install a specific driver if you encounter compatibility issues, or if you're using specialized keys or additional functions that need dedicated software.