I suppose ADATA is the stock SSD which came with the purchase.  The one Dell or OEMs use usually provide 2000-2200 MBPS (cost saving)  Your Model supports both 2230 and 2280   2280 is class 40 can definitely handle this. Go for it I haven't tested with Kingston SSDs  My Favorites are  Corsair MP510  or any NVME SSD from Samsung    NO you will get advertised speeds of 3500 MBPS     
Hello everyone, I need your help please. I have a G5 15 5590 with a "SSD M.2 ADATA IM2P33F3 NVMe ADATA 512GB" as the main storage device, and I would like to change to a "SSD Kingston KC2500 1TB" Reading the Setup and Specifications Manual, it says that it supports "one M.2 2280 solid-state drive PCIe NVMe 3x4 Class 40 Up to 1 TB" It's the same specs of the Kingston SSD, except the "Class 40". Does anyone know what that means? This SSD supports 3.500MB/s and 2.900MB/s (writing and reading), but I'm worried that the motherboard slot itself won't be able to keep up, and that it will run at slower rates. So, my actual question is: Does anyone know if this notebook has any speed limits in its M.2 slot? Thanks in advance!
M.2 slot speed (G5 5590)