I am currently using Lenovo G50-70 laptop. I bought it 2 years ago and its performance is pretty good till now. It comes with the 15.6 cm screen size, 2x2.0 and 1x3.0 USB port, 1x HDSC port, 1xHDMI port and 1xVGA port and also 1xCDROM port. After two years of use only its battery performance is slows down. it’s battery backup is about 1 to 1x1/2 hour after the full charge. This laptop comes with 4GB of RAM and 1TB of internal storage. However it consists of two RAM slots in which 1 is inserted with the 4GB RAM while the other remains empty for consumer will. For wireless connectivity, this laptop is built in WiFi and blue-tooth options. It works in windows 10 operating system. For video calling in skype through internet it is built in web-cam, which capacity is about 2MP. fro better experience it offers the Dolby atmos digital plus surround system.