Unfortunately, the CB 3180 model has a couple different keyboard manufactures which means it makes it difficult to swap out missing keys or plastic brackets. Therefore, here is what I found so far to help distinguish between the different keyboards. If we don't happen to have any used keyboards left at the time, I can send you new keyboards to install instead. 



Keyboard 1


  • Black plastic brackets under keys

  • Symbol on the back of the keys =

  • Clips on the back of the keys  are more spread apart than keyboard 2

  • Can NOT hot-swap keys with keyboard 2 

  • Can hot-swap keys with keyboard 3

  • Can NOT hot-swap plastic brackets with keyboard 2



Keyboard 2


  • White plastic brackets under keys

  • Symbol on the back of the keys =

  • Clips on the back of the keys are closer together than keyboard 1



Keyboard 3 - (Our stock we purchased from Dell)


  • Black plastic brackets under keys

  • Can NOT hot-swap plastic brackets with keyboard 1 or 2

  • Can hot-swap keys with keyboard 1