A:Answer This is the PS42 Modern 8RC (https://www.msi.com/Laptop/PS42-8RX/Specification) I am guessing that Best Buy specked the smaller ssd who knows why..? FYI, I pulled the Kingston 256MB ssd out and installed a BPXP 1TB ssd.. You need to be able to clone the original drive to the replacement externally; then install newly cloned ssd. Note, I purchased a (M.2 NVME SSD Enclosure Adapter, USB 3.1 Gen 2) and used Macrium Reflect cloning software. The access is not the easiest, but doable if you take your time. I had no problems, plug and play after the cloning completed.