Dataram 4GB DDR4 SDRAM Memory Module - 4 GB (1 x 4GB) - DDR4-2666/PC4-21333 DDR4 SDRAM - 2666 MHz - Unbuffered - 288-pin - DIMM Allow convenient and fast access to the stored information your computer is actively using for maximum efficiency No matter how heavy and numerous the applications that you are using, 2666 MHz memory speed will run them smoothly 4 GB of memory to refine your computer's performance 288-pin DDR4-2666/PC4-21333 interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer's performance 1 x 4GB modules for dependable storage efficiency and maximum convenience 288-pin for faster, dependable performance and better access to data and information DIMM form factor with 288-pin and 4 GB memory size effectively lessens the electrical load on the memory controller to allow maximum feasibility Unbuffered signal processing provides reliable optimization for your required applications to allow maximum usability