Have you checked asus support forum?. There are actually two versions of R558UR. 6409D/AT. Check if yours support 2133mhz. Better to be safe.
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Have you checked compatibility in crucial website? I tried but was not able to identify the correct model. Just check it on below:
Crucial 4GB DDR4-2133 SODIMM | CT4G4SFS8213 | Crucial.co
First of all, check at your manufacturer website whether your new products are compatible with your laptop. I am talking about the RAM mainly. And then use authorized service center for installation if laptop is under warranty. I am not sure why you're even thinking doing otherwise. I myself...
Finally i bought and installed the crucial 8GB RAM mentioned earlier in the thread.Interestingly, i am getting usable RAM as 11.9 GB out of 12. I have always observed higher difference between usable and installed RAM. Anyways, posting some CPU-Z pics for the memory. Hope everything is good...
Well, that is strange as I am sure it was available when I posted the link. Now I guess op has to follow what you suggested.
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Why should he go for Chinese sites if he can get it from mi own website. In India it is distributed by TVS which should be trustworthy enough.
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