Nothing anyone is doing will tell you if the version you have is legal. If you have the original discs and they came with the hardware (and no other copies were made), it’s legal. Absent that, I don’t think there is any way to tell if it’s legal.
Soulsurvivor is correct as it’s best to get it from the site directly. I was in a rush, quick used Google and used the first link. However, the link I gave you is valid and if you started, finish it.
The graphic shows some of the differences in various suites regardless what version you have. Important to note that none of the OEM’s have Nero Burning ROM which is what most users want. That program usually requires a puchase of the full retail version.
Update: I added the Belarc screenshot that shows the versions installed but not the source.