This DDR4 (260-pin) memory is designed for DDR4 laptop sockets and will not work on DDR3 (204-pin) sockets. This memory is designed for motherboard sockets, which support 32GB per socket capacity. F or sale is a new and sealed OWC 128GB (32GB x 4) DDR4 laptop memory. The box has light marks. The item "OWC 128GB (32GB x 4) DDR4 2666MHz SODIMM (OWC2666DR4S128S) Laptop RAM Memory" is in sale since Friday, March 6, 2015. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Memory (RAM)". The seller is "ideals_uk" and is located in London. This item can be shipped worldwide.