Actually, I want to upgrade my laptop RAM. So, when I was searching for compatible RAM for my laptop I got to know that it was already pre-installed(inbuilt) with 4GB 2666 MHz? Do I need to add 8GB of 2400 MHz or 2666MHz?
-->Motherboard : 832A
-->Processor : Intel core i5 7200U (7th gen)
-->Motherboard Clock speed ranges from 2400-2666 MT/s
-->Processor supports DDR4-2133.