4GB Dell New Certified Memory RAM Upgrade for Dell 4GB for Inspiron 15 (1564) SNPY995DC/4G A3414620 1 x 4GB DDR3-1066 PC3-8500 204-Pin Sodimm 1.5v Dual Rank (2Rx8) 1066MHz Certified for Dell P/N: SNPY995DC/4G A3414620 Lifetime Replacement Warranty Included