 "Crucial - DDR4 4 GB DIMM 288-pin" " Crucial 288-pin CT4G4RFS8213 Server Memory CDW.com
"More speed. More bandwidth. More efficient. Next generation DDR4 memory is here.Overcome one of your greatest server limitations: memory. From networking, cloud computing, and virtualization to HPC, Big Data and more, memory - dependent server applications require increasingly higher densities of memory and higher levels of performance than are attainable on current DDR3 technology. Enter Crucial DDR4 server memory.This product is a 4GB DDR4 server module that operates at speeds up to 2133 MT/s and has a CL15 latency. It is a Registerred DIMM (RDIMM) with Error Correction Code (ECC). It conforms to the industry standard DDR4 RDIMM layout of 288 pins and is compatible with systems that take DDR4 2133MT/s RDIMM memory." 
 "Crucial SO-DIMM 204-pin 4 GB DDR3L SDRAM" " Crucial SDRAM - CT51264BF160B System Memory (RAM) CDW.com
"Help your laptop perform at its best. Designed to help your laptop run faster and smoother, a Crucial memory upgrade is one of fastest, most affordable, and easiest ways to improve your system's performance. Crucial memory empowers your laptop to achieve faster application loading times, faster system responsiveness, and increased ability to multitask and handle data-intensive programs. What does this mean? Spend less time staring at loading screens and more time getting stuff done. Crucial laptop modules are rigorously tested at both the component and module levels to ensure that your memory meets the stringent compatibility and performance standards. Every module Crucial manufactures is inspected by the Systems Compatibility Group before it leaves the doors. At a fraction of the price of your laptop, an investment in Crucial memory helps your system get up to speed." 