Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cheap knockoffs? Counterfeit?

I don't think these are genuine Lenovo products.First of all, these are only rated for 3 amps, and the Lenovo product is rated at 7 amps in the US. Maybe this is why they get DANGEROUSLY hot. Other reviewers noted this as well. I actually smelled my carpet burning under one of these, which is how I learned how hot they get. I unplugged this adapter and plugged in the the REAL Lenovo adapter that came with my machine during the same usage and it was barely warm.I don't know if these are counterfeit, but I do know that I threw mine away and wouldn't recommend them to anyone. I think they are actually dangerous to use due to the overheating issue and the low Amperage rating. I knew the price had to be too good to be true, and it is.