Product Details Reviews Shipping & Returns Product Details HP Compaq 6720s 6730s 6735s Replacement Laptop Keys HP Compaq 6720s 6730s 6735s Replacement Laptop Keys This 100% OEM Keyboard keys will work with both the 6535s, 6735s and 6730s laptop models. NOTE: There are 4 version of this keyboard, the keyboard looks the same from the top, but the hinges under the key cap are different. HC29, and HC37 are very easy to tell apart, but HC12 and HC38 are a little harder to tell, HC12 Has a wider bottom metal tab, the HC38 version has a narrow bottom metal tab. HC12 HC29 HC37 HC38 WHAT COMES WITH EACH LAPTOP KEYBOARD KEY ORDER The Key Cap This is the piece of plastic that has the letter on it. The Retainer Clip The plastic or metal sisscor clip pieces that hold the key cap to the base of the keyboard. The Rubber Cup This is the piece of rubber or plastic that acts as the spring to rebound the key after your press it. Reviews 1 Review Hide Reviews Show Reviews –> perfect 5 Posted by Unknown on 28th Jan 2016 I was happy with the item, and instruction online helped the process as well.