Since the cable is only internally attached to the keyboard circuit board with a removable connector, you can replace the cable if it breaks by disassembling the keyboard. The USB cable that comes from the back of the keyboard is used to connect it to your computer. The keys themselves use rubber dome switches, and the black keycaps can be removed with a keycap puller or a spudger. If you look up “keyboard” in the encyclopedia, you’ll see a picture of the K120. The K120 is fairly common in offices because of its cheap price and simplicity. Since the keyboard comes in a variety of versions for different languages, you can use the Deskthority Wiki to match your part number to the keyboard language. You can find the more specific part number on the bottom of the device. You can identify this keyboard by looking for the Logitech logo and the model name “K120” printed by the top right corner of the device. The top right of the keyboard has three labelled indicator lights to show when you have num lock, caps lock, and/or scroll lock enabled. The row of function keys from F1 to F12 sits above the alphabetic keys and is separated into three sections of four keys each. The arrow keys are arranged in a standard inverted T shape with a cluster of regular keys above-home, end, page up, page down, insert, and delete. It has a standard PC keyboard layout and includes a numpad and dedicated arrow keys to the left of the alphabetic keys.

The K120 is a basic full-size keyboard released by Logitech in 2012.

Logitech k120 keyboard keys not working