Lenovo ThinkStation S30 compatible Black Diamond memory 4GB DDR3 ECC UDIMM 1066MHz. Compatible computer model: Lenovo ThinkStation S20 4105, C20x 4272, D30, S20 4157, E20 4215, E20 4222, S30, C20x 4269, C20 4265, C20 4262, E20 4220. Black Diamond Memory offers the most extensive line of memory solutions today. With our decades of experience specializing in memory, Black Diamond Memory is a proven manufacturer to the semiconductor industry. Our great products combined with our world class service and support have helped us to where we are today. When you have an Black Diamond memory chip, you can count on it being the best available memory for your system. Our system specific Branded Memory line delivers in performance, and is designed to be guaranteed in compatibility with your system. Each of our memory chips come with a lifetime warranty for your peace of mind. Use our Upgrade Configurator to easily find the correct memory module for your system.