We are buy 400-AFMZ. Its work perfect Closed.
Good day! Im need to upgrade R520 server and install SSD with around 500G. In dell shop found only 400-AMCD, but no this drive in Russia markets. Found similar disk in our markets: 400-AKUV. It is compatible with R520 servers or not ? If not, pls say other compatible SSD partnumbers for R520. Thx! 
Need to upgrade R520 with SSD