RAM & Memory Upgrades
Crucial CT2K25664BD160B 4 GB Kit (2 GB x 2) (DDR3L, 1600 MT/s, PC3L-12800, DIMM, 240-Pin) Memory
Increases desktop performance Easy to install Compatible with OEM systems 100% component and module tested for high reliability Available in DDR to DDR4 memory technology
https://www.bizrate.co.uk/ram_memoryupgrades/crucial-ct2k25664bd160b-4-gb-kit-oid4147351178.html