MT55L512L18FF-11 ES MT55L512L18FF-12 MT55L512L18FF-12 ES MT55L512L18FF-12 IT MT55L512L18FT-12 MT55L512L18P MT55L512L18P-6.7 MT55L512L18P-7 5A MT55L512L18P-7.5A MT55L512L18PF-10