I installed it on a Toshiba C670D which gave signs of weakness: keys that do not work or, worse, that activate by themselves (such as the enter key, rendering it unusable PC). Short.
The keyboard is absolutely identical to the original either visually or by touch.
It is also very easy to change: just a screwdriver unclip the small tab in the top of the keyboard (just above the F1, F2 etc); then remove the 4 screws; it must then gently lift the keyboard because there tablecloth comes out; then he must detach the table by pivoting up the connector; and finally redo the opposite with the new keyboard. It takes 5 minutes by my watch.
And in addition it works!
All that to say that I am very satisfied.