Review on Kadaon USB Numeric Keypad - Convenient 18 Key Number Keyboard for Laptop/Notebook PC by Micael Casillas

The "4" key broke the first time the item was used. Whenever I pressed it, it performed three or four inputs instead of one. Also, every time I hit the "seven" key, another 4 would also be entered. The plastic feels very cheap. The keys feel cheap and the chord is very weak. I assume that not all items are as faulty as mine. If it works properly, it's worth the small price. It is compatible with Chrome OS and connects without any software setup. Very convenient.