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Lenovo B50-30 B50-45 B50-70 B50-80 CD DVD Drive Connector Board LS-B095P | eBay
Lenovo B50-80 Intel Core i3-4005U 4GB 500GB 15.6 Inch DVDRW Windows 10 Laptop on Servers Direct
Lenovo B50 SSD/HDD and Memory Upgrade and Repair Guide - YouTube