I wanted to share this situation because a lot of gamers buy hardware at Best Buy while traveling, and I really need some help understanding how this even happened.

During a trip to Miami, I bought an open-box ASUS TUF GPU labeled as FLOOR SAMPLE.
That means it was a store-owned display unit, not a customer return.

When I got home, I realized the GPU inside the ASUS box was not ASUS at all.
It was a Lenovo Legion OEM RTX 4080, the model used in the Legion T7 34IRZ8 desktop a GPU that is never sold separately anywhere.

I contacted Lenovo NA and sent them:
• PCB photos
• Serial numbers
• Residue stickers
• Fan assembly photos
• Mismatched screws
• The ASUS box + Best Buy receipt

Lenovo confirmed 100%:
• The GPU is OEM Lenovo, not ASUS
• The part numbers don’t match any ASUS card
• Lenovo never installs ASUS fans
• The GPU is not sold standalone
• So the card was tampered with before Best Buy sold it

Since this was marked as a Floor Sample, the only people who ever had access to it were Best Buy employees, not customers.
So this wasn’t a typical “customer swap” scam.

I also made a short video explaining the situation, because it’s easier to show the physical differences and the serial mismatches visually.

If anyone here can help me understand how this could happen inside a store-owned unit, or if you’ve seen something similar, I’d appreciate it a lot.
I’m trying to figure out the best next step, since Best Buy refused to help once I left the U.S.