You can't just buy any M.2 NVMe SSD. It must meet the following criteria: PCIe Gen4 x4 NVMe (Key M)
250GB-8TB capacity
Read Speed: 5,500 MB/s or faster (recommended)
Form Factors: 2230, 2252, 2260, 2280, 22110
Heatsink: Required If this all sounds a little bit too confusing, you can make things easier by looking for a PS5-certified drive. I've included a list of these below, or you can check out our list of the best M.2 SSDs for PS5: WD_Black 2TB SN850P
WD_Black 1TB SN850P
Crucial P310 2280 2TB