How to upgrade RAM memory in Lenovo B50-30, B50-40, B50-70 laptop - YouTube
Lenovo B50-50 - How to change or upgrade the hard disk - YouTube
Lenovo B50 Windows 7 Laptop (4th Gen Intel Core i3, 4GB RAM, 500GB HDD) - Laptop Specs
McPhilips Digital Solutions LTD - Brand New LENOVO B50-80;5th gen CORE i3 INTEL Processor (2.0GHz), 4GB RAM, Intel HD Graphics, 500GB Hard Disk, WEB Cam, HDMI, 15.6" LED Screen, Full Keyboard, DvD
Original 8x Dvd Rw Ram Drive For Lenovo B50-40 B50-50 B50-70 B50-80 B51-30 B51-35 300-15 Sata Dl Burner 24x Cd Writer Laptop - Optical Drives - AliExpress