The Samsung 8GB DDR4 PC4-2666V 288-Pin UDIMM M378A1K43CB2-CTD is a single module RAM with a total capacity of 8GB, designed for high performance in computers and servers. This DIMM module has a bus speed of PC4-2666V and features unbuffered memory technology. With its compact dimensions of 133mm x 30mm x 3mm and 288 pins, this Samsung DDR4 RAM module is a reliable and efficient choice for upgrading your system's memory capacity.