Hey friends.I want share my personal experience about this product.I am using this aptop model from 5 year.It has good sound quality compare to others model.It has no any expenses came in five year .I only formate in six month so my laptop work is smothly.No any fault came during five year this is varry gud product of lenovo.Even more software installed in this model does not get hanged.It has verry good bettory backup.It has four usb port.Very gud keyboard and smooth.It is support 2.0 usb port.You can use this devise 2: 30 to 3 hour without charging.If you like this view pls like and comment.You can see thus model I share my laptop pic with this review. .Thank you.