Product Details Shipping & Returns Product Details HP a931nr Replacement Laptop Keys HP a931nr Replacement Laptop Keys This HP A931NR Replacement Laptop Keys will work with ALL versions of the A931NR. NOTE: There are 3 version of this keyboard, the keyboard looks the same from the top, but the hinges under the key cap are different. Please take a second to compare your hinge to the images below, you will need this information in step 2. HC12 HC29 HC37 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. Shipping & Returns