512MB 200 pin SDRAM SODIMM for HP. Parts-Quick Equivalent to HP Part Numbers: Q2632A, Q7723A.. BEWARE! DO NOT BUY FROM OTHER VENDORS WHO CLAIM THEY ARE SELLING PARTS-QUICKBRAND. OUR WARRANTY IS ONLY FOR ITEMS PURCHASED DIRECTLY FROM PARTS-QUICK. ALL PRODUCTS BRANDED AS PARTS-QUICK ARE TO BE SOLD SOLELY BY PARTS-QUICK. PARTS-QUICK DOES NOT AUTHORIZE THE USE OF IT"S BRANDED PRODUCTS TO OTHER SELLERS. .Compatible with: HP Compaq Color LaserJet 5550 Series,5550N, 5550DN, 5550DTN.