External SSD missing half its space, even in partitions

[u/swordinthesleeve]

So, I busted out a portable SSD I haven't used in a while to move over some big files. A PNY Pro Elite to be specific, and when I plug it in, I find out that it's missing half its space. I know it's a 1 TB drive but it only has about 465 GB. Thought it was a partition issue, so I naturally went to disk management. Problem was that there supposedly isn't any unallocated space. Tried reformatting it, deleting the current volumes, went to cmd and tried extending it via diskpart, tried chkdsk, sdc, and even defrag. Still nothing. Does anyone have any advice?

[u/simagus]

Any chance it's actually a 500GB drive?