Corsair XMS 4GB DDR3-1600 Module (1x4GB)
https://www.nanodog.net/shop/ram-cor-xms-4gb-1600-corsair-xms-4gb-ddr3-1600-module-1x4gb-345
https://www.nanodog.net/web/image/product.template/345/image_1920?unique=bca758c
This product is no longer available.