512MB DRAM Memory for Cisco ASA5505 Adaptive Security Appliance. Parts-Quick Equivalent to Cisco  ASA5505-MEM-512=, ASA5505-MEM-512D.Guaranteed compatible memory. LIFETIME WARRANTY.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.