Aurora R9 SSD upgrade Questions

I am looking to upgrade my (boot) SSD from a 256gb m.2 PCIe NVMe to a 2 TB. The issue I am "very" confused about is: the drives I see available are mostly Gen 4.  From what I can find from the R9 setup guide is that my PCIe Bus is Gen 3/2. I've read that a Gen 4 "may" work, but at Gen 3 speeds.

I don't want to pay for a card that "may" or not work up to intended speed.

I have looked at a few Gen 3, and they seem to be sub-standard knockoffs or astronomically priced.

Anyone have any possible suggestions?

Current Config:

One PCIe/SATA M.2 card slot for 2242/2260/2280 solid-

state drive

Chipset

The following table lists the details of the chipset supported by your Latitude 5320.

Table 3. Chipset

Description Values

Chipset 9th Generation Intel Core i5k

Processor Intel Z370

DRAM bus width Single channel = 64-bit, dual channel = 128-bit

Flash EPROM 16 MB

PCIe bus PCIe Gen3/Gen2