Hello friends. I have my best expirence for lenovo harddisk f309 1 tb wired external harddisk. I have parchase this product 2 year ago. And I am using this product and I am happy with lenovo harddisk. Lenovo brand is so good.this harddisk performance is so good. And I have everyday using this product upto 7 hour but no heating problem and no speed caping. And usb 3.0 speedy harddisk. This product is good featurs and style and design is good. I like this product design.lenovo service is so good and no quarry .and imidiate answere for all question. This product value for money. Really really so good hard drive. I also like this product.