512MB PC133 144 pin SDRAM SODIMM. 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:Brother Printer MFC-8370DN,Brother Printer MFC-8380DN,Brother Printer MFC-8480DN,Brother Printer MFC-8660DN.