Product Details Shipping & Returns Product Details HP DM4-3000 Laptop Key Replacement (Beats Audio) HP DM4-3000 Laptop Key Replacement (Beats Audio) This HP DM4-3000 Beats Laptop Key is 100% OEM, Offers Perfect Fit & Finish. HC20 This is the layout of the keyboard What comes with each laptop key kit. 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