Hi, andrew6103!
Did you mean fx553vd? If yes, then you can upgrade it with SSD - it's hardware
is mostly similar to GL553VD, and there is an 2280 M.2 SSD slot:
Default SSD model depends on country, I've got SanDisk SD8SNAT128G1002. You can install any compatible SSD - I remember that there is a list somewhere, but I forgot where exactly. GL553, as i remember supports NVMe SSDd:
for example,
this, but you can
encounter some problems.